AN: WHAT'S UP PEOPLE? ARE YOU IN THE MOOD FOR A CRAZY EXTREME FOUR WAY CROSSOVER? CAUSE IF SO, BOY DO I HAVE A STORY FOR YOU!

In all seriousness, this thing is going to be quite the juggling act to pull off. As I mentioned, it is a four way crossover between Danny Phantom, Young Justice, Gravity Falls, and Alex Rider. If you don't know all of those characters, that's fine. Everything you need to know about them is explained in the story. You mostly just need a solid background in Young Justice and Gravity Falls, and even if you don't, it will probably be okay.

On a completely unrelated note, my main problem with the stories I write on this site is that I make them up in my head first. Which is like, cool, except they get so wildly implausible and overblown, but it doesn't matter cause it's just for me and I don't care about plot holes when I'm entertaining myself. But then I get this urge to tell other people cause dangit if it isn't a great idea that everyone deserves to read, but then I have to turn this convoluted mess into an actual story with a plot that makes sense and stuff like that. Which is difficult.

SO! The moral is: Don't judge this thing too harshly. It was greatly amusing to me when I thought it up, so hopefully at least some of you will get some joy out of it!

(also this is completely unrelated to any of my other stories and is set after the end of season 2 in Young Justice. Honestly, it's set after the cannon run of all the stories, with some slight changes to how they ended. Also, Mt. Justice is still around and the team works out of there. Cause… I like Mt. Justice. :D)

I don't own (deep breath) DANNY PHANTOM, ALEX RIDER, YOUNG JUSTICE, OR GRAVITY FALLS! Phew. This is going to be a mouthful to type each time…


Kaldur rubbed his forehead, trying to relieve his headache. It had been a difficult day. Team Alpha had failed their mission, landing three of them in the infirmary. Connor had destroyed the training room, and Garfield and Bart weren't talking to each other for some reason. It was chaos.

The Atlantean sighed, knocking his head gently against the wall. There were days when he almost missed being undercover. Surely tricking the enemy into believing he was evil was better than trying to wrangle a collection of teenagers with superpowers. It had not seemed this hard to lead before he went undercover in the Light.

Kaldur knew the real reason it seemed harder. He'd had Nightwing to lean on before. He was the most experienced of all of them, and he had held the team together during one of their worst times. Even back when he was still Robin, he had been a glue of sorts, binding the team together. With him gone, things seemed to just fall apart.

Nightwing had been off the radar for nearly four months now. They knew that he was still active, but no one had been able to nail down his location. Well, maybe Batman, but if he had he wasn't telling. Kaldur didn't even necessarily want Nightwing to rejoin the team. He just wanted to be able to talk to one of his oldest friends again. M'gann and Connor were good, but he, Wally, and Dick had been friends for such a long time. They had been the original teen heros, a group. Now Wally was dead and Dick was gone. Kaldur had never felt more alone, not even when he had been undercover all by himself.

Kaldur shook his head, pushing himself away from the wall. He was done feeling sorry for himself. He needed to check on his injured teammates, make sure they would heal fine. Then he needed to talk to Batman about repairing the training room. Kaldur winced internally. He was not looking forward to that conversation. And he should probably get Jaime to talk to Garfield and Bart. If anyone could fix that situation, it would be him.

Before he could actually act on any of those things, the zeta tube went off.

"Recognized. Nightwing B01."

Kaldur would deny it to the day he died, but his mouth fell open at those words. Could it really be?

He ran to the main room, desperately hoping that his friend had returned. As he skidded into the room, he spotted the acrobat, stumbling out of the zeta tube. His joy quickly faded as he realized that Nightwing was in bad shape. His uniform was in tatters and he was bleeding.

"Nightwing!" Kaldur ran up to him, searching for injuries. "What hap-"

"Not now."

Nightwing shoved past the shocked Atlantean, staggering over to the main console. He began typing, having to pause every few seconds to get the shaking of his hands under control. He finally managed to finish whatever he had been trying to do, and he slammed one last button.

Immediately the zeta tube lit up again.

"Recognized. Guest Z01. Guest Z02. Guest Z03."

Nightwing limped back over to the zeta tube, staring at it intensely.

"Come on, come on." He muttered under his breath.

More of the team had made it into the main room by this point. Kaldur kept them back, sensing that Nightwing wouldn't take kindly to conversation at the moment. Kaldur didn't know what was going on, but he knew Nightwing. They wouldn't get anything out of him unless he wanted to tell them. Trying to force the issue would just make things worse.

As the seconds passed, Nightwing seemed to deflate.

"No…" he whispered, looking utterly destroyed. Kaldur took a hesitant step forward, not quite sure what to do. He was about to speak when a figure suddenly materialized in the zeta tube.

Nightwing immediately brightened, rushing forward to help the figure who was stumbling out of the zeta tube. Kaldur took in the new person. He was a teenage boy, rather short with curly brown hair. He looked panicked, his breathing fast and his entire body trembling. He swayed a bit, almost toppling over before Nightwing caught him.

"Dipper?" Nightwing asked, worry permeating his voice. "Are you okay? Where are the others?"

The boy- Dipper- squinted up at Nightwing.

"The others..?" he mumbled before his eyes rolled up into his head and he passed out. His skin started to glow and his shaking got even worse. Nightwing cursed.

"Not now," he muttered, gently setting Dipper down. He looked up at the rest of the team for the first time since he had entered the Cave, his gaze scanning them.

"Zatanna!" He called, relief evident in his voice. She approached cautiously, her brow furrowing as she took in the shaking teen.

"Can you help him?" Nightwing asked desperately. "Ground him or something?"

Zatanna looked at him questioningly, but she nodded. She placed a hand on the boy's forehead and muttered a spell. His shaking lessened, and the glow enveloping his skin faded.

Dipper taken care of, Nightwing went back to staring at the zeta tube, clearly waiting for the 'others' he had mentioned. It had been almost a minute since Nightwing had entered the Cave. Based on both Nightwing's and Dipper's conditions, Kaldur was worried about whoever had been left behind.

He had almost given up hope on the 'others' when two more shapes appeared in the zeta tube. They staggered out, one clearly supporting the other. The more mobile one was blond, his eyes fierce as he scanned the room for threats. He was holding up another boy who looked only partially conscious. His black hair was matted with blood which dripped down his face.

"Danny!" Nightwing hurriedly took some of the injured boy's weight, helping the other teen carry him further into the room. The black haired boy blinked, seemingly a little more aware.

"I'm fine 'Wing." He slurred, batting weakly at the arms holding him up. "Quit fussing."

"He has a concussion." The blond said bluntly. "That's why it took so long. I had to drag his sorry butt all the way over the zeta tube. He can't even walk by himself."

"Can so…" the boy (Danny?) mumbled. He was immediately proven wrong as he almost face planted. The blond caught him with a huff, dragging the boneless teen more or less upright.

"Seriously Danny? You of all people should recognize what a concussion feels like. Sometimes I feel like you have one more often than you don't."

"Mean…" Danny whined. "Where's Dipper? He's never mean to me."

The blond stiffened, looking around frantically.

"It's alright Alex." Nightwing said, placing a hand on the blond's shoulder. "Dipper's here. He's fine."

Alex shook his head. "He has on the verge of an attack! Don't you dare tell me one hasn't happened."

"It has." Nightwing admitted. "But Zatanna stabilized him. He'll be fine."

Alex seemed to truly relax for the first time. He heaved a great sigh, some of the tension going out of his shoulders, though he never loosened his grip on the dangerously unstable Danny. Kaldur figured this was as good a time as any to intervene.

"You can bring him to the infirmary. We'll patch him up."

Alex stiffened again, he gaze locking onto Kaldur. The Atlantean had to fight the urge to take a step back under the force of the glare. Nightwing stepped in between the two, holding up his hands.

"Chill Alex. They're friends. I wouldn't bring you somewhere unsafe."

Alex eyed the team suspiciously, but he finally conceded with a stiff nod. Connor stepped forward, lifting Danny gently. The boy in question mumbled something unintelligible, but he didn't fight the hold. Alex hovered nearby, switching between looking at Danny with concern and glaring at anyone who got too close. The group of three left the room, heading toward the infirmary. Kaldur turned back to Nightwing, taking a deep breath.

"Not that I'm not glad to see you…"

Nightwing laughed breathlessly.

"Yeah, sorry about this. I would have called ahead but there wasn't really time."

"What happened?" M'gann asked, coming up to Nightwing and giving him a hug. She pulled back hastily when he winced.

"You're hurt!" She cried.

"I'm fine." Nightwing said, waving a dismissive hand. "It's just a scratch. I'll fix it up later. Right now, we have a lot to talk about."

Kaldur nodded, turning to the rest of the team.

"You can all go back to what you were doing. Nightwing and I will discuss what has happened. We will have a meeting about it later."

A couple of the teen heroes grumbled at being dismissed, but they all cleared out. Kaldur nodded in satisfaction.

"First things first." He walked over to Zatanna, crouching next to her. Nightwing followed, kneeling next to Dipper, taking one of his hands.

"Is he alright?" Kaldur asked. He didn't know what was wrong with the teen, but it didn't look good.

"He will be." Zatanna said, but she still looked worried. She looked at Nightwing, concerned.

"What happened to him? I've never felt someone with this much uncontrolled magic running through their system before. In all honesty, it should kill him, but his body almost seems used it. How is that possible?"

Nightwing looked incredibly sad. He brushed Dipper's bangs away from his face, wincing at the obvious fever that was wracking the boy.

"It isn't really my story to tell." He said softly. "Suffice it to say that he was born to magic and he will probably end up dying because of it."

Nightwing straightened abruptly, standing up and walking away.

"Do you have a room where he could rest?" He asked in a tight voice, his arms crossed over his chest. "The worst is over at this point. He just needs sleep."

"Of course." Kaldur said. "Zatanna, you know…"

Zatanna nodded, standing up. She whispered a spell and Dipper floated into the air. She walked out of the room, leaving Nightwing and Kaldur alone for the first time since the whole fiasco started.

Kaldur walked up to Nightwing and gave him a fierce hug, ignoring the acrobats injuries. Nightwing hugged him back just as fiercely. They separated, smiling at each other.

"I missed you my friend." Kaldur said genuinely.

"I missed you too." Nightwing said with a rueful smile. "I honestly did not mean to go AWOL for so long. Things… happened."

"Things like the ones that just stumbled into the Cave?" Kaldur asked, raising an eyebrow. Nightwing winced.

"Sorta. I've actually known them for a while now. But yeah, they were part of it."

"Who are they?" Kaldur asked. He wasn't sure when Nightwing would have found the time to befriend a random group of teenagers, or why he would keep it secret. It actually hurt a bit to know that his friend hadn't trusted him.

Nightwing noticed his hurt expression.

"I'm sorry. I wanted to introduce you to them before, but you were undercover, and then everything happened, and it just never happened. I was always planning on you guys meeting, but it's complicated."

"Complicated… how?"

Nightwing grimaced. "Well, for one thing they're all wanted by the government."

"What?" Kaldur yelled. He honestly hadn't expected that.

"It's not their fault!" Nightwing said hurriedly. "They're good people! Heroes even. They've just… had some really bad luck."

Kaldur rubbed his forehead, his headache from before making a vicious return.

"I need more Nightwing. I can't just harbor fugitives!"

"I know! I know, and you will. Just give them time to recover, and we'll explain everything. I promise!"

Kaldur nodded. He knew Nightwing, and if he said these kids were good, than he would trust him. It didn't make his headache any better.

"You couldn't have just come back uneventfully some day and rejoined the team without any complications?" He asked, only partially joking.

Nightwing laughed, a more carefree sound than Kaldur had heard from his friend in a long time. He threw an arm around the Atlantean, still laughing.

"It's good to be back."


AN: Tada! First chapter! Explanations next time (which is also where you will see the changes to cannon in all their stories).

I was this close to writing Alex and Danny out of this story because the main focus is on Dipper, but in the end I kept them in. I just have a bunch of ideas for interactions between the three of them that I really like, and I dunno. It makes the story more fun! And more complicated… Sigh. Why do I do this to myself.

Bye for now guys!