Donatello managed to repair a mouser and wanted to trace it back to its source, where it was created. Bloom stayed behind to guard Master Splinter just in case and when the Turtles returned, they had a human woman with them, who was also a red head, but her red hair was a darker shade than her own. Master Splinter didn't look very happy to see another human here. He tolerated Bloom because she stumbled into them by accident, but his sons deliberately brought another human to their home.

"My sons, why did you bring another human here?" Splinter asked

"Well you see we-"Mikey said before being cut off

"I thought I told you not to go to the surface where humans can see you" Splinter said with a stern tone

Bloom decided to intervene.

"Now I'm sure they had a perfectly good reason to do this" Bloom said

"Well we were tracing to mouser back to its source when we came across this woman being attacked so we swooped into to save her" Mikey said

Splinter placed his hand over his face at the utter stupidity while Bloom managed to make an argument quickly.

"Well think of it like this, if they hadn't did what they did then that woman wouldn't have survived. So maybe some good came out of this" Bloom said

"Bloom, let me remind you that we can't venture freely to the surface like you can. This woman will now be aware of our existence" Splinter said

Bloom decided to just step out for a moment. She went above ground and went to a nearby park to think things over. Everything was so foreign to her and she didn't even know how she was supposed to settle in.

The girl then heard footsteps and looked back to see a gang of men. They stopped in front of her and gave her evil smiles. Bloom knew they had bad intentions, but she wanted to avoid a fight, mostly because she wasn't in the mood to fight right now.

"Can I help you?" Bloom asked politely

"You realize you're on our turf girlie?" The blue haired thug asked

"Your turf?" Bloom asked

"Yeah, this turf belongs to the purple dragons. So beat it" The blue haired thug said

Bloom guessed that this blue head was the leader of these so called purple dragons and just sighed.

"Look you need to share areas with other people. You can't claim anything as yours if you don't own it" Bloom said

The men glared at her with hatred in their eyes.

"You trying to lecture us?" The leader said

Bloom didn't say anything back.

"Boys, it seems like this girl doesn't know who she's messing with. Let's teach her a lesson" The leader said

Bloom got up from the bench she was sitting down on and decided to walk away because she was not in the mood to fight right now.

"Girl, you think we'll just allow you to walk away after bad mouthing us like that?" The leader said

The redheaded ninja looked back at them.

"Look, I don't want to fight. I'm leaving like you asked me to, so that should satisfy you" Bloom said

A fat purple dragon thug stepped forward with wooden stick in his hand.

"I'll take care of her, boss" The fat thug said

The fat thug charged at her with his stick ready. He swung at her but she dodged it with little effort. He kept swinging at her but she dodged every single swing. She performed a high kick and the man was knocked back several feet and hit a tree.

The other member of the gang saw this and charged at her with their weapons but they ended up getting beaten with ease too. The purple dragons scampered away since they knew they couldn't defeat her.

Bloom then went back down underground and saw that the human woman was awake. She learned the woman's name was April O'Neil and she used to be an assistant to creator of the mouser robots, Baxter Stockman.

They were talking about infiltrating his company and shutting it down.

"You want to shut down his operations?" Bloom asked

April turned around to see another redhead like her but she was much younger and red hair was lighter shade than hers.

"I thought I was the first human you guys interacted with" April said

"Well the truth is you are, at least the first human from our world that we've interacted with" Mikey said

"I don't understand" April said

"We'll explain the details later but right now we need to put stop to these mousers" Leo said

"But I thought you guys didn't want to interact with the surface, why the sudden change?" Bloom asked

"Bloom, usually we wouldn't, but we'll have to make an exception for this one mission because if his mousers are allowed to run amok then we could lose this home too. In order to stop him we have no choice but to go above ground and confront him directly" Donnie said

Raphael smiled and was ready to fight.

"Now your speaking my language bro" Raph said

In order to get a better understanding of this world that she's stuck in maybe it would be better to explore it and what better way then to go on this mission with them?

"Count me in too" Bloom said

The turtles were surprised to hear this from their new friend.

"Are you sure? You don't have to go if you don't want to" Leo said

"No, I want to. I want to learn about your world, and this is probably the best way to learn about it" Bloom said

The turtles looked at each other and nodded.

"Alright then if you want to go with us then just follow us" Donnie said

Everyone managed to make it in there undetected and April went to a terminal where she worked on shutting down the mousers.

Bloom and the turtles were in the lab when the lights came on. They looked up to see that Baxter stockman was in the control room of his mousers.

"Intruders?! Here to steal my secrets?! You'll leave here with nothing! Not even your lives!" Stockman said

The mad scientist then activated his defensive security system and security lasers aimed at them. They started to fire at them, but they managed to dodge them. Bloom was confused by these creations and wondered how he made them.

The turtles started to destroy the lasers with ease but there were so many of them that they had to take cover.

"We're sitting ducks here now what?" Raph asked with frustration

Donnie looked around and noticed that the lasers were perched up against metal support beams and got an idea.

"Bloom can you make a strong electrical charge?" Donnie asked

"Yeah why?" Bloom asked

"Aim an electric charge at the metal support beams and that should stop lasers. It will short circuit them and power them down" Donnie said

Bloom just nodded and started her hand signs before she performed the jutsu she needed.

"Lightning style: Supreme thunderbolt"

A beam of lightning came out of her hands and hit the metal beam. This proved to very effective, and the lightning traveled through out the metal beams and the lasers that were perched there received a shock and they exploded after short circuiting.

"WHAT?! NO!" Stockman yelled

The then crashed through the window, causing the mad scientist to fall on his back.

"You're reign of terror has come to an end Stockman" Leo said

"That was a nice line there" Mikey said

"Heh, you like it?" Leo said with a smile

"What are you?" Stockman said with shock

The door behind him opened up and April revealed herself.

"They're with me" April said with confidence

"April? You're alive" Stockman said with surprise

"And kicking. We have enough evidence to put you away for a long time" April said

Stockman got up and dusted himself off before laughing.

"What's so funny, clown?" Raph asked

"You think you've won? You've defeated me? Wrong! You see I've been working on several mouser prototypes and now is the perfect opportunity to test their destructive capabilities" Stockman said

The scientist then then took out a remote and hit a button. The whole room started shaking. Several mousers that were a lot bigger than the ones they been facing appeared before them. They were even bigger than the heroes who came to stop them. Mikey then did his famous girly scream after seeing them.

"What the shell are those?!" Raph asked in surprise

"It looks like the small mouser robots were just weak versions of what he was really creating" Donnie said

They charge at them and the heroes jumped through the window they just crashed through to avoid being the mousers' lunch. They chased after them and starting shooting lasers at them. They avoided them.

"Bloom short circuit them with some water" Donnie said

Leo managed to do two diagonal slices on one mouser and its head was sliced apart while the rest of its body fell down in defeat.

Donnie was facing two robots and was avoiding their giant mouths. Both of them then shot lasers at him but Donnie was a step ahead of them and used it staff and performed at pole vault jump. The lasers meant for Donnie ending hitting the mousers themselves and destroyed them.

Raph attacked the mouser robot he was fighting with his Sai. He attacked the legs and knees, causing it to fall down. The hot headed turtle then proceeded to stab the head several times before stopping after it stopped functioning.

Mikey managed to avoid being chomped on. He was facing two of them and landed on one mouser's back.

"Yoo-hoo mister bad robot over here" Mikey taunted

The other mouser charged and opened its big mouth to chomp down on him but the turtle jumped in time and the mouser that he was on ripped to shreds and the explosion from the mouser that got damaged destroyed the other one.

Bloom was facing several giant mousers at once and performed a water style jutsu.

"Water Style: Water shockwave"

A giant current of water appeared and this proved to effective because the mousers short circuited instantly. More mousers came after her and she responded with another jutsu.

"Lightning style: Parabolic discharge"

Bloom performed a lightning style jutsu that would hit the surrounding area she was in. The mousers proved to be weak against her attacks and short circuited.

Soon another mouser showed up but this one had three heads instead of one and they roared.

"Three heads?! This is bad! Everyone knows that two heads are always better than one. But this one has three. Three heads are better than two" Mikey said

"Mikey that's just a figure of speech to begin with" Donnie said

Stockman couldn't help but brag about his creation to his enemies.

"Impressive isn't it. I call this the Cerberus mouser. A much-needed upgrade compared to the giant ones you just faced" Stockman said

More mousers showed up and they were mousers 2.0 with pointier heads and spider like legs.

"I'll take care of those new mousers that just appeared" Raph said

Raph used his Sai and easily dealt with them. The others were dodging laser fire from the three headed mouser.

Bloom tried a water style jutsu but that proved to ineffective.

"I don't how you have these powers young lady, but it doesn't matter. This mouser robot is waterproof" Stockman said

Bloom then tried to a lightning style jutsu but that proved to ineffective as well.

"This robot can't be short circuited with electricity like the others. Face it you're out of your league" Stockman said

Leo swung his sword, but they only left minor scratches on the body like when someone keys a car. Leo swung again and again. He managed to do some damage around the neck area and then legs and knee joints but it wasn't enough.

"State of the art metal armor. Nothing can break through that" Stockman said

"Donnie, we could sure use your brain right now" Mikey said

"In order to do any damage, we need to break off some of its armor first" Donnie said

"How do we get past that armor then?" Raph asked

"Well if we can get it to high enough temperature then we might be able to break it" Donnie said

The heroes avoided getting bitten by the monster robot.

"Bloom use a fire jutsu and melt that armor" Mikey said

"Fire won't be enough, I'm sure Stockman made this thing heat proof which means that fire won't be enough" Donnie said

Bloom decided to act now before it could attack them again. She performed some hand signs and then lightning formed in her hand. Bloom was using Chidori and by pumping in more chakra she extended the blade's length.

Stockman saw this and laughed at her attempt.

"You fool! I just told you that electricity won't work on this mouser" Stockman said

The mouser robot charged at them, and they dodged its bite. The turtles attacked the heads, but they could damage it at all and they had to back off.

"We need to retreat for now" Leo said

Bloom shook her head.

"No need, I can take care of that thing" Bloom said

The redhead then charged at the robot with the Chidori in hand.

"You must have a death wish" Stockman said with smirk

With great speed she was in front of the robot instantly while at the same time she managed to perform a horizontal slice and then zipped past the robot and undid her jutsu.

The necks of the Cerberus mouser were sliced and the heads came clean off and the rest of the body soon fell. The entire mouser short circuited and shut down, much to Stockman's shock.

"That's impossible!" Stockman said

"How did you do that?" Donnie asked

"It may have been impervious to lightning but I formed a blade with lightning to make its cutting power stronger. It was more than enough to cut through that armor and short circuit it" Bloom said

Stockman then summoned the ultimate robot. The giant mouser and unlike the other mousers this one actually had more than two legs it had giant pinchers.

"Another one? Come on! How many robots does this guy have?!" Raph asked

"This one may only have one head but its even stronger than the Cerberus mouser. It has the same defensive armor too. You can't win" Stockman said

The mouser then unleashed several missiles at them and they were forced to dodge them. The pinchers opened up to reveal some laser guns inside of them and they started to fire rapid fire lasers they were forced to dodge them too.

Donnie went in to clog the gun with his staff but to pinched closed on his staff before he clog it.

"Uh oh" Donnie said with worry

The pincher spun Donnie around before letting go and he went flying towards the wall with his back slamming against it.

Leo attacked the legs but the armor proved to be strong. The lead turtle was smacked by closed pincher. Raph tried to aim for the head but it opened up and shot some missiles at him and that hit him. He was sent across the lab. Mikey tried to attack from behind but the robot spun its pinchers around and the orange headbanded turtle got hit and was sent backwards.

"This thing is tough what do we do? Raph asked

Mikey got up and charged at the robot again. the pincher unleashed more laser fire from its pinchers but Mikey was able to dodge them and managed to forced the claw shut and this proved to effective because the soon exploded.

"Nice one bro!" Raph said

Leo attacked the joints of the robot, and they did some damage but it wasn't enough,

Stockman then pushed a button and a new pincher soon took its place after the old one was taken off.

"That's cheating!" Mikey said

"You simply don't understand my genius. This is something called being prepared which is also called strategy. You can't win against geniuses like myself. Give up now and I may consider giving you a painless death" Stockman said

The jumped towards them and was about to land on them but Bloom was faster and performed an earth style jutsu this time.

"Earth style: Earth mobile core"

A giant earth pillar emerged from the ground and knocked the robot off balance and knocked it down to its side. It was sparking a little bit, taking some damage from earth jutsu and the fall.

"You're a much bigger threat then those green menaces I'll take care of you first" Stockman said

The pinchers opened up and unleashed rapid-fire lasers but Bloom was quicker and performed wind style jutsu.

"Wind style: Cyclone whirlwind"

A whirlwind appeared and deflected the lasers with ease and then Bloom performed another Jutsu and this time it was fire.

"Fire style: Phoenix Firebomb"

A phoenix fire bird appeared and smacked right into the robot and managed to knock it back a little.

"I've had enough of this, you're going to pay for this with your life" Stockman said

"Her ninjutsu skills aren't enough we need something more damaging" Leo said

"If we can somehow hit with enough brute force then we should be able to stop it for good" Donnie said

"And how are we supposed to do that?" Raph asked

"It looked like it took some damage from that fall and Bloom's jutsu earlier if we can make it do that again and again then we might stand a chance" Leo said

"That's good and all but is Stockman really going to try and jump on us again?" Mikey asked

"We'll have to give him a reason to do it" Donnie said

Bloom chimed in and told them not to worry about this plan.

"Don't worry we don't need to go through all that trouble. I'll punch that thing apart" Bloom said

"Bloom, remember that thing has super strong armor. Punching will just hurt your hand" Donnie said

"Just stay back" Bloom said before charging towards her enemy.

Stockman just laughed.

"A head on attack?! That's your plan?! Pathetic!" Stockman said

The robot fire off its weapons but Bloom managed to avoid them all with ease. She sped up even more. The sudden increase in speed shock Stockman.

"No human should be able to move that fast" Stockman said

The robot tried to grab her with its pincher, but the redheaded ninja jumped in the air to avoid it. She pumped in more chakra and hit the robot with her right hand.

Both the turtles and Stockman were shocked to see that the robot broke apart instantly. The damage it took from the fall was minor compared to Bloom's punch.

The robot sparkles and was none functioning now.

"What type of punch was that?" Mikey asked

"Leo? You know?" Raph asked

"No I don't. I don't even think the strongest man on earth could've done what she just did" Leo said

"This can't be happening! Me defeated?! A genius like me isn't supposed to lose!" Stockman said

The heroes then came face to face with him again.

"It's over Stockman, you lose" Leo said

Stockman then recalled all of his mousers and they came over to the lab to attack the intruders, but April managed to stop them by putting in an overload sequence, in other words they were set to self-destruct. The heroes managed to escape in time.

"Woo-hoo! And the heroes triumphed over their amazing battle with the evil scientist!" Mikey said

"Work on your narration bro" Raph said

"Now that that's wrapped up I think I would to know more about Bloom first" April said

They explained everything about Bloom to her and she was shocked to hear that the young redhead came from an entirely different world.

"Wow I had no idea" April said

"Yeah its rough to be dragged away from your home like that" Raph said

Bloom watched them and got a little sad. She missed her own family, She missed her older brother and older sister.

Splinter seemed to have noticed this and knew was on her mind.

"It appears that you are getting rather homesick" Splinter said

Bloom nodded.

"Yeah I miss my home and my family" Bloom said

The other turtle heard what she had said.

"We'll find a way to get you home, don't worry" Donnie said

"Yeah, I'm sure your parents will be happy to see you again in no time" Mikey said

Bloom giggled.

"Well to tell you the truth I don't have any parents" Bloom said

Mikey was shocked to hear this.

"What?! No parents?! I'm sorry!" Mikey said

"It's fine, don't worry" Bloom said

"But at the same time at least you don't have to follow any house rules" Mikey said

Raph hit Mikey over the head and the younger turtle saying ow as usual.

"We really need to find your off switch" Raph said

Bloom laughed.

"Well I'm not completely alone I actually have a family. An older brother and older sister" Bloom said

"They must be worried sick about you" Leo said

"Well my brother doesn't know I disappeared but when he does find out I imagine he'll try to find someone way to bring me back" Bloom said

"Does your older sister know?" April asked

"Yeah she does, my older sister is actually my sensei who in charge of training me and my teammates" Bloom said

"You can crash at my place until we can out how to send you home" April said

Bloom smiled and politely declined.

"I appreciate your generosity April, but I'm going to stay down here" Bloom said

"You want to stay here in sewers? No offense, guys" April said

"None taken" They all said at once

"Well I feel safer down here right now. Besides I think I can actually help them with their training so I'll be staying here" Bloom said

April could see that she wouldn't be able to change her mind so she let it go and went back to her home while the others crashed and hung out for the evening.