Sliders: A Millma Verse Mission

Disclaimer: As always, neither myself or Terrance Sigma own The Flash, Supergirl, Arrow, or anything really but the idea.

Note: This is the co-written story between Terrance Sigma and myself we've been talking about for ages. Some chapters are written my me, CharmedMilliE- Karry Master, others by Terrance Sigma. We hope you enjoy this joint brain child and that it's not a disappointment!

Chapter One: The Mission.

-Prime Earth/Platinum Flats –

Sara was patrolling the streets of Platinum Flats alone. She in fact had the northern sector while Laurel, or rather her clone – Sara had to remind herself, took the western; Alex had the south and east, being the leader of this ARGUS operation. They really needed more members, but they were doing okay as a recently-started operation.

It was weird, being in a whole other city after uprooting from Starling and then Central, but she needed this. They all needed it. Laurel for an identity, herself for the freedom away from previous responsibilities and Alex for a fresh start together with Sara – hell, even Winn had joined them to just get away from it all. Still, they hadn't gained the city's trust yet, unlike their previous homes, but there was time. They'd only been in the Flat's for a few months and it had taken Flash almost a year to gain Central's trust and the Arrow even longer for Starling.

It was a quiet night, at least for her sector – Winn was quiet on the communicator, and she suspected distracted with a TV show or chatting up his new man – but this wasn't for long. A familiar blue rip in the fabric of space opened in front of her, and Sara sighed as she waited for Cisco to come through, wondering if this was Vibe's new way of instant transportation.

She was shocked, however, when a different man appeared. He was lank, tanned, had short cropped hair and the hint of stubble; what was more, he was dressed casually and wore no goggles like Vibe – although there was a resemblance.

"White Canary?" The man asked.

"Dante?" Sara tried. She'd never met Winn's brother, but had heard he was back in Central. Maybe Cisco and his brother were playing games with her?

"Dan...? No, I am not my uncle," the man replied sharply, causing Sara to do a double-take. "You may call me Echo and I need your help."

"Oh no, I've been through this routine before," Sara held up her hands, "a time traveller came to recruit me and when push came to shove, he abandoned me for a new team. I'm not going to be put through the wringer again." She moved her bo staff threateningly.

"Not even if the universe is at stake?" Echo asked. "One mission, Sara Lance and that's it. All I ask."

"How do you know my name?" Sara countered sharply.

"I know a lot, Miss. Lance and I know you. You won't back away from a fight – it's in your blood. Ever since the League of Assassins took you in," Echo stated.

"What are the stakes?" Sara asked, not even trying to find out how this man knew her history.

"The Multiverse."

-Mutant Earth-

Caitlin, Cisco and Barry were still in STAR Labs. They had just stopped Laurel Lance's doppelganger from destroying the city – and Cisco. Kara Kent was in the Cortex waiting for them, with Joe West and Harry Wells lingering, neither talking to the other as they waited for the dynamic trio to join them. Jesse and Wally were still in comas. They had been idiots, thinking they could stop the Black Siren with enhanced suits and now they were paying the price.

"Okay we have to get back to the farm," Kara said the moment Barry re-entered the room, moving over to him now and glad to break the awkward silence. "Vibe Junior, Stalker…. Let's go." With Cisco's apartment building destroyed, Kara had offered her place to temporarily house Vibe Junior, and with Lady Power and The Flash residing at the Kent Farm, it was probably the safest place in the country for Cisco right now.

"Seriously can y…?" Before Cisco could finish, a blue portal opened in the lab.

"Why did you open a portal?" Barry asked, jumping. He had not seen Cisco reach for anything but Cisco was the only one who could create such a thing.

"I didn't," Cisco said, hands up in shock and protest, wondering if this was the man who had sent Black Siren to kill him. The man who could hop worlds with apparent ease. Out of the portal indeed came a man. He was lank, tanned, had short cropped hair and the hint of stubble, reminding Cisco of his father, in a weird way. He seemed harmless though as next to him was the familiar face of Sara Lance.

"Hold on I'll be back," the man said quickly, and a portal opened and the man was gone.

"Sara? I thought you were with that Rip guy?" Barry pointed out in confusion.

-Prime Earth/Temporary STAR Labs-

"So, is anything going on?" Jesse said, sitting on a chair in STAR Labs temporary warehouse accommodation – the actual Labs were undergoing reconstruction and everyone had moved to the warehouse until it was complete. The only people with her were Cisco and Wally. She was bored and desperate to get out there as Quick once more. To take down some meta-human with her boyfriend by her side.

Cisco span in his chair at this, a sombre look on his face. "Sorry, but Power Girl and The Flash have beaten you to it," He said.

"Again?" Wally asked. "Since when are they the faces of our team again?" Wally was annoyed. When Kara and Barry were Earth-hopping, and starting their relationship, they had left the city to their sibling's speedster hands – but after the whole thing with Parasite, Xander Luthor and Maxwell Lord, the couple had taken the city back. Usually being the first ones on a scene once more. It had been a while since Quick and Silver were needed.

"It's their city," Jesse said, sighing resolutely to herself. She had noticed even when they had taken the lead that the public still seemed to see Quick and Silver as the 'extra' heroes. "The people love them. You know Wal, I'm starting to think we need our own city."

"Or you two could just go on a date? Be normal." Cisco suggested with a smirk.

"Where's the fun in that?" Wally said grinning, leaning in to kiss Jesse. Before Cisco could answer this thought, a blue portal opened in front of them. The trio jumped up, turning to it. "I didn't think you could do that without the goggles!" Wally now cried.

"I can't!" Cisco said, indicating this was not his doing. Before more could be said, a man appeared out of the portal. He wore no goggles or gloves, but he looked very like Cisco, making Cisco double check to see if this was a version of himself – there definitely was a similar look to this man.

"Quick, Silver," the man said, looking at Jesse and Wally and then turned to Cisco. "D– Vibe." The man clearly stopped himself from saying something else as he looked at Cisco. "I'm Echo and I have come here to request your help."

Cisco, Jesse, and Wally looked at each other, all on edge a bit. They were usually the ones hopping worlds asking for help. It was very odd for someone to come to them. "Look, I mean you no harm," Echo said, holding up his hands in a defensive matter much like Cisco. "I just want you three to help me with something important."

"What?" Cisco said, concerned, but they were used to helping people from other worlds by now too. Just because this man had come directly into STAR did not mean he was evil. They did have to be careful though. They did not know this Echo and had been burnt by a world hopper before. Namely the fake Jay Garrick.

"I need you and others for a mission," Echo stated.

"You sound like that Rip Hunter guy Sara and the other Legends told us about," Jesse said, remembering the stories. "That didn't go that well for them.'

"One mission is all I am asking. One mission." Echo ignored the Rip reference. "Oh, and the fate of the entire multiverse is in your hands." That caused the three to pause and look at each other. If the entire multiverse was at stake they had to take a chance.

"Well, you did say you were bored," Cisco mumbled to Jesse.

There was a flash and both Jesse and Wally were in their speedster outfits, the latter holding out Cisco's Vibe outfit. Cisco chuckled.

"Okay, where do we go?" He asked Echo.

"I believe you call it 'Mutant Earth'," Echo responded.

"Oh. Am I glad you asked us and not Barry and Kara – Barry kind of…"

"Hates Mutant Barry? I know. Trust me, the feeling is mutual between them," Echo smirked as he lifted his hand and the blue portal opened behind him again. "I'm not as good as you, Vibe," he suddenly added. "You need to come with me; I can't send you over like you're used to."

"Okay…" Cisco replied cautiously as Quick and Silver waited. "Once more into the breach." The trio grabbed hold of Echo and stepped into the blue opening. Immediately they appeared in STAR Labs – although not the same STAR Labs as the one currently under reconstruction.

Cisco looked back to Echo, only to find he had vanished. He turned back to Jesse and Wally, just as Kara Kent spoke up.

"What's going on and should I be hitting someone?" Kara asked in agitation.

-Karry Universe-

Sara and Alex were in their house. It had been a long day. Karen had named Superboy 'Connor' and he had also taken Astra's last name so he was now Connor Starr. The DEO has been busy with Cadmus's take down after-effect.

"Been pretty busy," Sara said smiling at her wife and went to kiss her. "We should blow off some steam." Alex smiled as she kissed Sara back and they leaned on the couch only to jump when a blue portal opened.

"Seriously?" Alex said. "Isn't Kara and Barry supposed to be interrupted by this?"

A man appeared from the portal. He was lank, tanned, had short cropped hair and the hint of stubble, what was more he was dressed casually and wore no goggles like Vibe; although there was a resemblance.

"Cisco?" Sara asked, thinking this might be an alternative Cisco. If he had a different parent it was possible there was a Cisco that looked slightly different to the Cisco they knew.

"No, I am not my…. Forget it," the man said. "You may call me Echo. And White Canary, Alex Danvers-Lance, I have come here seeking your help."

"Oh no. I have been through this before. A time traveller tried to recruit me. I said no then and I say no now," Sara said.

"I've got to meet this Rip Hunter someday. He is stealing my thunder," Echo mumbled. "You will not join me even if the universe is at stake?"

"Look you might as well…"

"Wait," Alex said holding up a hand at her wife. "What's at stake?"

"The multiverse," Echo said making the two look at each other.

"We'll do it," Alex said, before Sara could answer.

"I knew you would," Echo smirked as the blue portal opened behind him again.

"Alex…" Sara stated quietly, and warningly.

"This is different to Rip," Alex replied reasonably. "Plus, it looks fun…"

"Okay, you want to do this. I'll come along for the ride." Sara sighed.

"Great!" Alex jumped to her feet as Sara stood with a little moan.

"Just grab hold of me and I can take you there," Echo stated.

"Where?" Sara asked.

"Mutant Earth," Echo replied.

"Oh," Alex and Sara said together as they now stepped through the portal Echo had opened, each holding on to the man as the familiar, although slightly altered sight of STAR Labs presented itself to them.

Instantly both DEO agents noted the others in the room – the two Ciscos and the other Sara. A version of Kara, Alex recognised as Lady Power from her recent visit to Karry Universe was looking annoyed as Echo vanished into another breach.

"Okay now this is getting old," Harrison Wells said, Sara stiffening at the man before remember this couldn't be the Reverse-Flash version.

-Alien Earth/DEO-

"Can you keep track of your cat?" Mon-El complained, batting the orange cat with the cape off his shoulder. The cat jumped from him but instead floated in front of him and hissed before flying into Kara's arms. "And why does she not like me?"

"Maybe because you yell at her?" Kara pointed out, holding onto her cat and smiling at her boyfriend. All three were in their superhero outfits. Kara was in her normal Supergirl outfit while the cat just wore a red cape that also had the house of El symbol sewn on it. Mon's outfit resembled that of Superman's, although was mostly all red instead of blue, while the cape he had blue instead of red and smaller, on the right side, was Kara's house symbol. On his first few outings as a proper superhero he hadn't any symbol. He had disregarded his Daxam house due to recent events with his parents, but when he and Kara had learned of the backlash from the public of not having a unifying symbol for their heroes, he had agreed to wear the house of El on his outfit, although obviously not as big as Supergirl or her cousin's.

"Well I think this is taken care of," a third voice said and in the side office of the DEO walked Laurel Lance, dressed all in white. They had met her a few months back, just after the events of Mr. Mxyzpltlk, and had at first mistrusted The White Siren – she had the same ability as Siobhan, only more powerful. She had apparently been born with it, but Laurel had proved her worth and had joined them in the fight against Cadmus. "I never actually said I'm sorry about what happened with your foster father. That must have been hard," she added sadly.

"He joined Cadmus. I had no choice," Kara said noncommittedly, having long accepted this. To take down Cadmus had been difficult and ended with Kara herself having to kill Jeremiah. Alex and her had both tried to get him to change but call it Stockholm syndrome or maybe he truly believed in what he was doing but he had left his foster daughter no choice. To save the world she had to make the hard call. "Streaky no need for heat vision." Kara added as the cat's eyes lit up suddenly. She did not back down though.

"Have I ever mentioned it's unfair she can do that and I cannot?" Mon said, clearly upset by this.

"She's a Kryptonian cat. What do you expect? Besides, it's not all it's cracked up to be…" Kara said as she followed the cat's stance. Where she was looking, as if on cue, a blue portal opened. Kara sighed. "Remind me to tell Cisco to call before he pops in," she said, assuming this was Prime Earth come visiting again. But out of the portal came an unfamiliar man, not the Vibe they knew. "You're not Cisco."

"No I am not," the man said with a weird lopsided grin – getting used to these awkward introductions. "Supergirl, Valor, White Siren." Streaky meowed. "Sorry, and Supercat." Streaky calmed down, resting in Kara's arms as she powered down her eyes finally. "I need you three… sorry four," the man corrected when Streaky hissed, "to help me in a mission."

"We have enough on our plates right now," Kara said dismissively, not exactly trusting some random person popping into their world. She trusted Prime Earth and she would trust the other earths in their communication system, but they had things to do.

"You might want to rethink that answer Supergirl." Echo stated.

"What's the problem?" Mon asked before Kara could.

"The entire multiverse is at stake," Echo said causing the foursome to pause in thought.

"What's the multiverse?" Laurel asked.

-Mutant Earth-

Another portal had opened in the cortex, and the same man appeared with another Kara – this one in a Supergirl outfit – who had an orange cat on her shoulder, a man in red they had not seen before stood next to her, and a Laurel Lance dressed in white. "One more," the man said excitedly, disappearing through another portal.

"You're not going to try to kill me, are you?" Cisco asked, pointing at Laurel who raised an eyebrow. The last Laurel Lance he had faced had been Black Siren, after all.

-SuperEarth-

Isabelle Wells and Amelia Allen were waiting. They alone had been expecting Echo, after all.

Echo had vanished in a swirl of blue lights, telling them to get ready and now they stood in the training room, dressed in DEO black outfits, feeling like ninjas without a cause. The pair had discussed the possibility of what they were to face in this mission, and had concluded that dressing for the occasion would be the best prep – so Belle had teleported into the DEO storage locker and 'borrowed' two outfits for herself and Millie.

Now, waiting for Echo, Millie decided to practice her newly-gained abilities, making a nearby concrete block float easily into the air before dropping it back down.

"Have you considered using that in defence?" Belle asked.

"What? You mean like toss people about if they're about to attack me?" Millie mused.

"No, more like toss things at people who are about to attack you," Belle pointed out.

"Oh, you mean like this?" Without warning, the concrete block flew at Belle, who barely had time to vanish in a rush of blue lights to avoid it.

Appearing behind Millie in the same lightshow, Belle slapped her friend on the arm. "That was dangerous!" She complained clearly annoyed.

"Honestly…" Millie rubbed her arm where Belle had hit her, but indicated to the block, hanging in the air a few inches from where Belle had been. "I can stop these things too, you know."

"Well… how was I to know?!" Belle groaned.

"Because you're my friend and I refuse to hurt you. Tease you, definitely, but never hurt you." Millie smirked, just as they were bathed in blue light as the familiar form of Echo, their other friend, appeared.

"Ready girls?" He asked.

"I was thinking," Belle now said as Echo raised his eyebrows. "We need names. Kara is Supergirl, Barry seems to be 'The Flash', we need something…"

"So, do half the population of America who were affected by Enchantress's spell," Echo pointed out. "You guys can muse on it later, now we must go."

"Okay, okay," Belle raised her hands as Millie smirked and the pair moved forward.

-Mutant Earth-

Stepping through the portal with Echo, Millie and Belle found themselves in a very crowded STAR Labs – although one they barely recognized. Theirs had long-since been transformed for DEO needs, but this one was still as STAR Labs once was. It also contained several doubles, including two Karas. That put a smile on Millie's face as she looked at both of them.

"Seriously should I punch him?" The Kara in pants asked, pointing.

"No need for that Kara Kent," Echo called out. "As everyone who I brought here knows, I am Echo and I need your help because the entire multiverse is at stake."

"I'm sorry… what?" Kara Kent said, looking flustered and ready to punch him anyway.

"Some quick introductions – I'm using your terminology." Echo started, ignoring Kara now. "From Prime Earth, we have Jesse Wells known as Quick, Wally West known as Silver, Cisco Ramone known as Vibe, and Sara Lance known as the White Canary. From Alien Earth, we have Kara Danvers known as Supergirl, her cat Streaky otherwise Supercat, Mon El also going by Valor, and Laurel Lance, or the White Siren. From Karry Universe we have Sara Danvers-Lance, another White Canary, and her wife Alex Danvers-Lance, no alter-ego. From SuperEarth we have Millie Allen and Belle Wells – they've recently come into the superhero game and so far, have no alter-egos either. Everyone else is the native of this Earth which you call Mutant Earth. Kara Kent – Lady Power. Barry Allen – The Flash. Cisco Ramone, or Vibe."

"Vibe Junior," Kara Kent interrupted with a smirk.

"Oh, I like that. Keeps them different. Vibe Junior then," Echo corrected. "And, of course Caitlin Snow, Harry Wells and Joe West."

"How do you know our terminology?" Prime Earth Cisco, or Vibe asked, confused and quite taken aback.

"Well, Vibe, as you can see my power is like yours. Only I don't open portals – I can hop worlds though. It's the reason why you had to touch me for me to bring you here. As for knowing your terminology, think of it like I can sort of sit on a border of a world and watch that world. I have been watching your six worlds for a while. You have done something no other worlds have done: You have connected them, which makes your six worlds the perfect ones for this mission."

"But you only said five worlds," Millie said, having gone back over the names of the worlds Echo had said in her head, and there were only five mentioned.

"Oh yeah, well six worlds connected, but that Earth 2 is sort of just… there," Echo said, shrugging as Harry and Prime Jesse gave him an odd look. "Anyway, as I have said, there is grave danger I need all you to help me with. The multiverse needs your help."

"Wait, you've been spying on us?" Kara Kent said, going over what Echo had said so far in her head too. "I am so going to punch you."

"Whoa!" Barry said, taking hold of his Kara. "Just give it a minute here. If he doesn't come up with something good, then you can punch him."

"Well yes," Echo glanced at Kara Kent, a little weirded out by her but continuing, "I have been spying, but the border of this world and Karry Universe are very close to the destruction. It makes it hard to watch over these two worlds. It's the reason why we are here. If I can't spy here, then he can't spy here."

"Who?" Millie and Belle now asked, everyone glancing to them now. Alone, the pair seemed to know Echo more than the others.

"Tremor," Echo said. "He's a doppelgänger of me from another Earth much further down the multiverse – but he's not so kind. I just like spying on Earths, seeing the differences and studying them. He…. he likes to cause chaos. Take meta humans from random Earths, put them on others or set them loose. He's taken random people and thrown them on different Earths with no way home. He's given bad people advanced weapons and watched the fireworks. I try to clean up after him, but well… his messes can be too large sometimes. He's trying to kill me too, and anyone else who can go to different worlds. Including all Vibes."

The Mutant Earth resident's eyes went to the Cisco's as Vibe Junior spoke up. "Well, I guess we know where Black Siren came from," he said.

"He hit here already?" Echo said, clearly not knowing that. "Not good… No… I knew he would go after your connection soon. He hates it. He'll try to take you all out. All your worlds. If he does it, if he gets the Vibes, no one will be around to stop him. He can cause as much chaos in the multiverse as he would like. It would be his play toy."

"Why have we not heard of him before?" Vibe pointed out. "We've been hopping worlds since we discovered the multiverse a few years back; why hasn't he been after us since?"

"Tremor and I are from as far back you could consider Earth 200ish," Echo moaned. "A lot of other earths to go through before you reach these ones."

"Oh. Wow." Vibe seemed lost for words.

"How are you suggesting we stop him?" Barry asked.

"Your devices," Echo said, glad to move the topic on. "The ones that connect the worlds. They can be modified to make a net that will stop his powers. I've already modified the ones on Prime, Wells, Alien, SuperEarth and Karry. Sorry, had to do those ones a little sneakily," he glanced to Prime Cisco at this, who looked a little affronted. "I need to modify the one here too. Now, once he is in the net and cannot jump to any Earth he wants, it will be easy to trap him, but your six worlds are too small of a net. It needs to be bigger." He moved over to a computer and typed in something. "Oh, you do not have the updated map. Hold on."

A portal opened and Echo disappeared into it and then reappeared in seconds, with a flash drive in hand. "Quick stop into Karry Universe… now!"

Echo put the flash drive in and showed the updated map of the multiverse. He projected it onto one of the larger screens so everyone could get a good view. It showed a vast spider's web of dots – six connected, the rest simply scattered. "Devices need to be set up on Earth 7, 8… not 9 – that's just a repeat of your 2's. Pointless. Earths 10, 11, 12, and… yeah, 18." Echo had used the computer to circle the unknown Earths as he said it. "These six earths, plus your six will make the perfect net to trap Tremor, using me as bait. The position of these six worlds will be able to force Tremor here to Mutant Earth. Hopefully, once all the devices on these new earths are activated, it would force him here, and only here." Echo took a breath at this. He bit his lip now.

"Unfortunately, we can track each other." He continued. "I can better hide out here – and Karry and Alien and SuperEarth make it hard as well, but any other Earths he will sense me. But we have an ace up our sleeves: Tremor cannot track Vibes using his portals. So, I propose teams of two go to each of these six earths, sent there by our two vibes, set up the devices, and then we will also need another device." Echo took another flash drive out of his pocket, putting it in to show the device. "My creation. It's a power drainer. Put around his neck and it will stop Tremor from being able to jump once the net is down."

The group had been sitting there listening to all this, some looking more lost than others. With the silence, Barry spoke up. "Can you give us a minute?" He asked, and Echo nodded, a blue portal appearing and he was gone. "He does that a lot easier than you." Barry turned to his Cisco who mumbled something. "Okay, what is everyone thinking here?"

"I don't like him," Kara Kent said.

"To be fair, you rarely like anyone at first," Caitlin said, to which Kara Kent shrugged and Kara Danvers gave her doppelganger a look wondering about the clearly different version of her.

"Well we all came here because he convinced us the multiverse was at stake," Kara Danvers said. "And if he is telling the truth it sounds like it is."

"I was just attacked by a mutant from a different world," Vibe Junior pointed out. "That kind of backs up his claim."

"And chances are, this Tremor will come after me too," Vibe said thoughtfully, knowing he had no choice. He needed this. "Besides, we do need to expand our system. We've been meaning to get to some of those other worlds anyway."

"How do we know we can trust him?" Prime Sara said.

"Oh, good looking and smart," Karry's Sara said, smirking at her counterpart.

"Um… sitting right here," Alex said waving. "You're going to flirt with someone else in front of your wife?"

"Doesn't count when it's myself," Karry's Sara said with a smile.

"Wife?" Prime Sara asked, smiling, but obviously nervous. "No-one mentioned that." Her eyes were on her Jesse, Wally, and Cisco who looked at each other but shrugged. "Anyway, back to point how do we know this is all not some trick?"

"He helped our Earth," Millie Allen pointed out, people glancing to her now.

"Yeah, without him, Barry wouldn't have been able to stop a witch with a god complex – long story," Belle added.

"I think we have to take the risk," Harry said slowly to this, giving Belle an odd look still.

"Right then. By world we're doing a vote." Barry decided. No-one objected. "Hold up your hands if you're in. Okay? Prime Earth first – those in favour of going along with Echo's plan...?" Vibe, Jesse, Wally, and Prime Sara all held up their hands. "Okay, hands down. Alien Earth are you in?" Kara Danvers, Mon-El, and Laurel all held up their hands and Streaky went up into the air too. "I'm going to take that as the cat is in. Okay hands down. Two people from SuperEarth. In?" Millie and Belle both raised their hands, looking resolute.

"Out of everyone, I think we trust him the most," Belle pointed out.

"This seems fun," Millie added in.

"By the way, who are you two?" Barry finally asked the question that was on most people minds. "Millie Allen?"

"I'm your sister," Millie said, a little cautiously now, but Barry shook his head.

"I don't have a sister," Barry said.

"Oh," Millie looked a little dejected now. She and her Barry were close, so to see a Barry who didn't know her… that was weird.

"And Wells?" Harry finally asked.

"You don't have me," Belle concluded, realizing the same as Millie that they were veritable anomalies here. Harry shook his head. It was hurting him to see a Jesse awake when his was still over in the med bay in a coma. Now a daughter he did not have was here and he did not know how to feel about that.

"Okay, moving on," Barry said, deciding to get off the unknown relatives. "Karry Universe. Alex, nice to see you again."

"You too Barry-White," Alex said with a smirk. "Hope to see you back on my world sometime soon."

"Me too. I need to see those kids. In or out, though?" Barry said and the two raised their hands. "That leaves us." Barry raised his own hand.

Kara Kent sighed as she raised her hand. "Only for you, Stalker," Kara Kent said as Vibe Junior raised his hand along with Harry and Caitlin. That left Joe.

"Yeah, I don't think you need me, and it's kind of crowded here so I am going to go…" Joe said. "Caitlin take care of Wally?" Caitlin nodded with a mumbled 'of course' before Joe left.

"Wally?" Prime Wally asked Caitlin the second his father's doppelganger left.

"He's…" Caitlin started, indicating the med bay. Wally and Jesse followed with their eyes to see their doubles on beds. Even Belle took a glance but the trio remained silent as they turned their attention back to the task at hand.

"Well, that's it we're all in, but we'll be careful," Barry spoke up gave a look to the Cisco's and indicated with his head the schematics for Echo's power dampening device, still projected on one of the bigger screens and they suddenly both knew what he meant. They glanced to one another. At that moment, a blue portal opened and Echo stepped out.

"Excellent," Echo said.

"I thought you said you could not spy on us," Kara Kent said warningly.

"It's hard, but not impossible," Echo said teasingly. "So, we need some time to make the devices and something easy for you to tweak the ones on these new Earths – what I did to the ones on Prime, Karry, etcetera is a little too complicated so…"

"We got it," both Ciscos said together.

"We're going to need some time," Harry spoke up. "Tomorrow morning?"

"If we're not doing this until morning, a lot of us will need places to stay," Belle pointed out to this, glancing at her alternative dad and then Echo, who shrugged.

"We can set up some bunks," Caitlin pointed out.

"We'll help," Millie nodded, nudging Belle who nodded enthusiastically.

"Well then, back to the farm for us," Kara Kent said, not hiding her pleasure at being able to go back home before all this began. "Vibe Junior?"

"I'll stick around here tonight," Mutant Cisco replied. "A lot to do now and a couple of heroes hanging around if anything happens," he nodded in Echo and Vibe's direction as Kara nodded.

-Sliders-

"Hey Chloe," Barry said walking into the house. "Good job out there. Where's Oliver?"

"He decided to head back to Star City before you got home to make it harder for Kara to kill him," Chloe said causally.

"Why would I kill him? I'm not warming to him, but I…" Kara started, but Kal appeared, still in his makeshift superhero outfit with El by his side. "Oh. I'm going to kill him."

"Come on Kara," Kal begged. "I want to help you!" El barked besides his master, helping him sell this to Kara.

"No," Kara said with a stubborn laugh. "Not a chance in hell." She moved off to the kitchen, Barry right behind her – he smirking at Kal though as he passed. The outfit looked good.

Kal pouted at Chloe. "Kal, remember our deal? You have to convince Kara," Chloe said.

"I will figure this out," Kal replied, determined to make Kara let him in, and the teenager and dog disappeared up the stairs. Chloe moved off after Kara now, and heard a crash above that was clearly Kal and El having started play fighting with each other.

"And he wants me to let him join us," Kara mumbled, before shouting out: "Kal go to bed! And don't destroy the house!"

"Sorry…" Kal called back.

"He convinced me," Chloe said instantly, hands up in the air. "I just helped make the costume. That's all."

"What are you doing tomorrow?" Kara asked her friend, ignoring the defensive statement now.

"Something tells me farm work," Chloe said, and Kara nodded. "Something's come up?"

"Yeah," Kara said.

"I got your back, girl," Chloe said, hugging Kara.

"Thank you," Kara said.

"But you should hire some real farmhands," Chloe mumbled, making Kara laugh.

-Sliders-

The next day, bright and early, everyone was in the cortex – which was crowded. "Everything is ready," Echo said smiling as Kara and Barry walked in, already dressed in their Lady Power and The Flash costumes. "Time to start sending people out."

"This is for you," Vibe Junior handed his Barry and Kara a small egg-shaped metallic device that looked vaguely familiar. "It's the inter-Earth communications device. Prime Cisco and I spent all night making six more for everyone – we've already implemented Echo's web-trap thing into it."

"How do we get back?" Kara asked, worriedly.

"Oh, once you activate the device we'll be alerted so we can open a portal and bring you back – it's what Prime Vibe did when setting up the original devices." Vibe Junior stated. "We've done it for all the other new devices the others have, and they know what to do now."

"Cool," Barry took the thing and put it into his belt. "And did you…?" he asked his Cisco more quietly.

"Prime and I made two," Cisco nodded conspiratorially.

"I think it's time," Kara Kent added as Vibe looked ready to call out, which he did only a moment later as his Mutant counterpart moved over.

"Right then. Earth Seven who's going?' Vibe asked.

"We'll take it," Millie said before anyone else could. "Lucky number seven."

"Totally," Belle agreed.

"Okay our surprise SuperEarth joiners take our first new Earth," Vibe said opening a portal for them to the chosen Earth. They glanced at one another before leaping through the thing.

"Earth 8?" Vibe Junior said.

"Sure. Why not," Kara Kent said, grabbing Barry's hand. "Can you do this Junior?"

"Hey," Vibe Junior complained. "I can open portals now! Earth 8 here you go." It took a second but a portal was opened and they were off.

"Next on the roster: Earth 10," Vibe called.

"A perfect 10. That would be all us," Kara Danvers said, her cat on her shoulders and Mon nodded.

"Kara and Mon from Alien to Earth 10. Over here," Vibe called as the cat hissed. "Sorry, and Supercat too." Vibe corrected himself as he opened a portal for them. They vanished through it.

"Number 11," Vibe Junior called once his Barry and Kara were gone.

"I'm good with that one," Wally said with a shrug.

"Yeah, 11 is as good as any other," Jesse said as Vibe Junior opened a portal, which they sped through without another word.

"12 over here," Vibe raised his hand.

"Honey?" Alex turned to her Sara who shrugged, not caring as they took the portal to Earth 12 without anther word.

"Guess that leaves us on 18," Prime Sara looked over at the Laurel dressed in white. The White Siren. That was weird. It was bad enough her Laurel was just a clone of the original one now.

"Sounds fine to me," Laurel said, smiling at her sister. "White Canary and White Siren. You know my Sara isn't in the game so it will be nice working with you. Let's see what you can do." Laurel said politely.

Sara chuckled. "Oh, I am good…" Sara and Laurel moved to the final portal and vanished through it.

"And now we wait for them to activate their devices to bring them home," Vibe said, sitting down. "So, anyone want to play poker?"

Post Chapter Note: So, our adventure begins. I hope you enjoy what we have planned.

Mini Footnotes Regarding Alien Earth. (PLEASE READ)

So originally me and Sigma thought of Alien Earth as Supergirl TV show earth, but not only since the TV show has been so bad lately also every time we visited the Earth we added something that brought it further away. Jay Garrick and Malcolm Garrick are there. We have a Laurel Lance there and Streaky so we decided to separate the Earth from the TV Show.

Since this story takes place in August anyway which would be after season 2 of Supergirl we created our own ending for season two. Cadmus is no more. Kara was forced to kill Jeremiah and now Alien Earth is away from the TV show.

REVIEW.

Karry Master and Captain Sigma OUT!