So I had this ready to go yesterday, then Fanfiction for some reason just decided to not work. Freaked me out since I had just finished editing this chapter and then when I went to save it everything just kind of crashed. Luckily I managed to copy and paste it before it was lost, so yay! I think quite a few people had this problem but seems fixed now, so here's the chapter! Enjoy!

Leo looked down at the chaos that was his home.

People were running full speed at one another, launching themselves at friends, then attacking in the most brutal way possible.

Fires had been let loose all over the grounds, shining brightly in the night sky. Pegasus and other creatures, nymphs and harpies flew and ran around in fear.

Screaming, roaring, yelling. All these sounds mixed together and overlapped one another, Leo listening to them all as he stood in shock.

As he scanned the area, he saw a seemingly healthy demigod come running out of one of the cabins, followed by a clearly infected boy crashing through the door. He stumbled and fell to the ground though, giving the kid time to run and find a place to hide.

Leo watched as the infected climbed to its feet, their eyes scanning in front of them as they took quick deep breaths, just as their gaze latched onto a new victim. Leo.

Leo gulped as the boy roared out before charging right at him. Leo whipped his head around, trying desperately to find a place to run to. Just as the boy was getting far too close for Leo's liking, he saw a head peaking out from behind the Big House. They locked eyes, and after a moment of the girl seemingly judging he was safe, she beckoned him over. Leo didn't need to be told twice.

He bolted just as the infected had begun climbing the hill.

He ran as fast as he could, following the girl as she lead him through a back door into the safety of the Big House.

As soon as she locked it, Leo collapsed against the wall, sinking to the ground as he gulped in air.

After he had calmed down, he looked up. The lights were off, presumably to not draw attention to themselves, but Leo could see five sets of eyes staring at him. After realising who they were, he sucked in a breath of relief.

"Guys," he laughed. "You're okay. Thank the gods."

Will, Nico and two other people Leo didn't know continued to stare at him, and this time Leo focused his gaze on the girl who had brought him in.

"Pipes," he breathed. She hitched a breath, her eyes watering. "Leo?" she asked, not believing her eyes. "The one and only," nodded Leo, spreading his arms and grinning up at her.

He had little warning as she jumped into his arms, wrapping them tightly around him. He did the same. "Oh my gods," she muttered. "How is this happening? How are you here?"

"Long story," chuckled Leo. He looked past her shoulder to Nico, who nodded and actually smiled at him. Leo returned the smile just as Piper pulled away and looked into his face.

"One we'll have to save for later," he said, looking at her. She closed her eyes and nodded, offering her hand and helping him up.

"Well then," started Leo, pointing to one of the boarded up windows. "This doesn't look good."

The atmosphere turned solemn, everyone's expressions growing dark. "That's one way to put it," muttered the girl standing across the room. She had dark eyes, pale brown hair, a vicious sneer, and a scar on her chin. Leo felt himself tense with her gaze resting on him.

"This is Clarisse," introduced Piper, gesturing towards her before moving on to the other boy in the room, who had brown hair and blue eyes. "And this is Connor." The boy nodded at him with a small smirk. Leo had the feeling he was the mischievous type.

"Great. Now that we have the pleasantries out of the way, can we focus on the more important thing at hand?" snapped Clarisse, glaring at them all and growing impatient.

"She's right," agreed Will, turning to Leo. "You're probably really confused at what's going on, so-"

"Actually, I know more than you think," interrupted Leo. They frowned, looking at him confused.

Leo explained the run-down of everything that had happened with him, Percy, Jason, and the Avengers, everyone silent and attentive as he explained as quickly as he could without leaving anything important out.

"So they both have the plague as well?" asked Nico, his eyes showing the sadness he was trying to hide.

Leo nodded curtly. "Yes, but-"

Clarisse slammed a fist down on the table that sat in the room. "Damn it, Jackson. Of course he would get himself infected when he wasn't even here when this whole thing broke out."

"Yes, it is bad," Leo started, trying again. "But-"

"It's more than bad, Leo," interrupted Nico, folding his arms. "Percy and Jason are the most powerful demigods I know. If they're both infected and out in the mortal world, things are going to completely fall apart."

"I know, but-"

"Maybe there's a way to get them back here before they lose themselves and escape into the city," suggested Will, turning to face the group.

"Guys?"

"How would we even be able to do that? And even if we did, we've lost control of the less powerful demigods we already have here," challenged Clarisse, her attention now fixated on the blonde.

Will shook his head in frustration. "Well maybe we could-"

"Guys!"

They all shut up and looked towards Leo, who was holding a small vial in his hand."

"I think I have a solution," he said, a grin forming on his face. Clarisse squinted at the vial. "And what's that supposed to be?"

"This," began Leo, dramatically. "Is a cure for the virus."

Their eyes all widened as they locked in on the tiny substance. "What?" said Piper in disbelief. "Where did you get it?"

"Our Avenger friends helped us develop it," explained Leo. "And it works?" clarified Will, his eyebrows raised. Leo nodded triumphantly. "It does indeed," he said.

"Wait a second," Clarisse jumped in, her eyes narrowing as they returned to Leo. "Why should we believe you?"

"Clarisse-" started Piper but the girl raised her hand to silence her. "No, I'm serious. We have no idea of knowing what that is. We could be risking even more lives by using it. In fact, how do we know you're not infected?" she said accusingly, glaring at Leo.

They all immediately tensed but Piper quickly jumped in. "He's not. Leo wouldn't risk infecting us by coming in here if he was."

She sounded confident but looked to Leo for confirmation. When he nodded strongly, she relaxed, as did the rest of them, though Clarisse did not let her guard down.

"I get why you wouldn't trust me," said Leo, looking at her. "But I swear it's the truth. And I know it works, because Percy and Jason have both already been cured."

"Really?" asked Nico, shocked. "That's what I was trying to tell you all," confirmed Leo. "That's how we know it works and why I hurried to get this back to Camp. And to answer your question," he continued, turning to Clarisse. "I know I'm not infected, because I'm immune."

"Immune?" repeated Will, staring at him in shock. Leo nodded. "That's how we were able to create the cure. Now all we have to do is distribute it."

"That will be easier said than done," said Clarisse, looking over to the front door where screams from outside could be heard coming through. "And we can't hide in here forever. Sooner or later, they attack here to. And then-"

As if on cue, something crashed against the door, causing everyone to jolt back away from it. Unnatural sounds could be heard from right outside, and then something lunged against it again, and again.

"They've found us," muttered Connor, moving towards the back door and looking through a crack between the boards that covered the window nearby. He jumped back, then turned around to the group with a look of fear in his eyes. "We're surrounded," he announced.

Clarisse swore under her breaths as Will and Nico quickly began to move over to lift the sofa over to barricade the door.

The yells and growls from outside became louder, and the banging on the doors more aggressive.

"What do we do?" Piper called over the noise, gritting her teeth as she pushed an armchair against the back door, trying to hold it in place.

Leo hurried to join her as they all divided up between holding the back and front door, wood chipping on both as the doors strength weakened with each blow.

Just as they locked eyes with each other across the room, their faces showing how they were beginning to accept the inevitable, the noise stopped, the doors remaining still.

No one moved, not even daring to breath loudly as they all listened.

Nothing.

Conor slowly moved away from the door and looked through the window. "They've gone," he muttered.

They exchanged confused looks as everyone moved to find a hole to look through to the outisde.

Leo pressed himself against the wall, looking through a tiny gap between the wood that boarded the windows.

Nothing. No one was there. It was completely dead.

Leo frowned. "Where did they go?"

...

"Call Fury," ordered Steve as they all sprang to their feet. "Already on it," replied Natasha, who was already walking quickly away with a hand pressed to her ear.

"What's going on?" asked Jason, as he and Percy quickly rose from their seats as well and sent confused looks around the group, who were all over the room by this stage.

"Tony, check Shields systems to see if the order has been given and if they've left yet," continued Steve, looking to Tony. "Got it," he responded, holographic screen brought up as he made his way over to the bar, where his computer and other devices had been left.

"Steve," pushed Percy, but they were ignored as Natasha walked back over. "No response," she gritted out. She glanced outside. "It's getting dark, and they've now had hours of preparation."

"Fury said he wasn't waiting around," muttered Bruce, with a dark look. "We have to stop them," declared Steve.

Percy and Jason marched right up into their faces, halting their movement. "Stop who? What is happening?" interrogated Jason.

They looked at each other, then back to the impatiently waiting teens.

"When you wouldn't tell us anything that was going on with you, or where you both came from," began Steve. "We assumed the worst."

Percy and Jason frowned, glancing at each other in worry. "What do you mean, 'the worst'?" Percy asked, warily.

"You both were so well trained, with these exceptional, unnatural powers," Clint said slowly, his words causing the anxiety in the two to grow even more with each passing moment. "We had never seen anything like you. Then, when you seemed unable to tell us where you came from, how you were forced into this life, the monster attacks," relayed Clint. He sighed, shaking his head. "When you Percy were terrified of being shot down in the plane, and how both of your fathers were unknown and untraceable, but caused what we thought was fear in you both, we thought we didn't have a choice."

"What? What is it?" pressed Jason, anger mixing with his anxiety now.

They hesitated for a moment before Natasha finally answered. "We thought you were part of a secret child-soldier organisation that kidnapped children at a young age, did experiments on them, and forced them to fight in wars and commit crimes."

Percy and Jason's eyes went wide as they stared in disbelief. "You're kidding, right?" asked Percy. When they didn't answer, the worry flared up even more. "Please tell me you're kidding."

They each had a pained expression which confirmed it. They were telling the truth.

"Oh my gods," muttered Jason, his eyes darting to the floor as he shook his head.

"Why on earth would you guys think that?" questioned Percy, astonished. "You both kept saying things that sounded beyond concerning without any context!" defended Clint.

"And your first thought was child enslavement?" Percy chided, raising his eyebrows as he looked at them in shock.

"Hey, this isn't the first time we've seen something like this, and there are organisations that do this exact thing. So yes, we had our concerns," argued Natasha, folding her arms.

Percy threw his arms up in the air as he turned and paced slowly in front of them, grabbing the back of his head in his hands. Jason stayed where he was but was deep in thought, seemingly not having paid attention to that last engagement.

"This makes so much more sense now," scoffed Percy. "Why you kept looking at us like we were kicked puppies. You all thought we were helpless, kidnapped kids that were part of some child-brainwashing, soldier making terrorist group?"

He huffed a laugh, but it lacked the humour. "We knew you were trying to get us to spill our guts, but this is crazy. Is this why you kept saying stuff like 'Help us so we can help others'?"

Bruce shuffled awkwardly under their gaze and Clint avoided their looks. Natasha held firm, though.

"We thought you were in danger, and we thought other kids might be too. We were just trying to help," she assured, her gaze stern. Percy looked at her for a moment before sighing heavily. "Yeah, okay." He hesitated for a moment. "Sorry for blowing up at you all," he said, looking at them all apologetically.

Steve shook his head. "Don't be, it's completely understandable," he reassured them, smiling at them both.

Percy returned the smile. "And I mean there was no harm done, so it was just a misunderstanding."

That time neither Steve nor anyone else replied, instead returning to their guilty expressions.

Percy's smile wavered. "Guys?" he asked, raising his eyebrows expectantly. "Right," agreed Bruce, but no one found it convincing.

Percy was about to say something when Jason spoke up.

"Hang on a second," interrupted Jason, finally refocusing his attention on them all. "Why were you all so worried after we explained everything?"

They froze, no one saying anything. "Guys..." warned Jason, folding his arms.

"Look, it should be nothing," started Bruce. The concern returned and they looked at them all in a way that made it seem the roles of adults and teenagers had been reversed.

"What should be nothing?" interrogated Percy, glaring at them now.

"We had to share our thoughts with Fury of what we thought was going on," sighed Steve, eventually. Before the two could start, he continued. "Shield wanted to find out everything they could on you, since from the sounds of it there was a very dangerous organisation that they were not aware of. And Shield is aware of everything."

"So what happened?" asked Jason, nervously.

"They managed to track down where you went every summer, Percy," explained Natasha, looking at him sadly. "They know where your Camp is."

Their eyes went impossibly wide, realising the reality of what they were saying.

"They know where Camp is?" Percy repeated, eyes glued to theirs. Natasha gave them a pitying look, but nodded.

"This is bad," muttered Jason, shaking his head and clawing his hands through his hair. "You think?" snapped Percy. Jason shot him a look, opening his mouth to retort before Steve cut in. "There's more," he said, quickly.

The two boys stopped, their heads slowly turning to face them, waiting expectantly.

Steve looked to Clint who begrudgingly explained. "After Fury saw how powerful you both were, he decided action needed to be taken. He ordered a battalion to be sent into your Camp to take it down."

"He what?!" Percy and Jason yelled in unison. "They think the kids are there against their will," Bruce explained. "So they'll not to hurt them," he continued, trying for reassurance.

Jason scoffed. "We're not worried about the kids, we're more concerned about your troops."

Steve frowned but Jason cut in before he could speak. "I don't care how strong you think those agents are or how much weaponry you have. These kids? They're half God, most having been training for years. And on top of that, their most likely all infected with the plague! Meaning they have lost their better judgement and would attack anyone who comes near!"

It was the Avengers turn to be shocked and fearful, their eyes going wide with realisation. An entire Camp of infected demigods? They wouldn't stand a chance.

"This is bad. This is really, really bad," groaned Jason, his body tensing.

"Hold on, we don't know if Fury has launched the invasion yet. We may still have time to stop it," said Clint, trying to sound hopeful.

But just as Percy and Jason looked to almost calm slightly at his statement, Tony rushed over, not looking pleased as he carried his laptop.

"There was a meeting held with Fury and the top agents not long after they left the tower. After that, an order was sent out for vehicles and different weapons to be prepped and ready for launch," he explained quickly. He then looked up to face them. "Numbers tallying up to a small army left the Shield compound about forty minutes ago."

"Damn it," muttered Clint, the frustration evident in his voice. The rest of them stood in shock, unmoving, before Natasha finally snapped them all to attention.

"We don't have time to wait around then," she said, her posture straightening as she made sure to remain focused. "We can find a way to get there and stop them before things get out of control."

Natasha looked to them all, wearing her usual expression that left no room for argument or joking around.

They all immediately refocused, standing up tall and nodding in agreement. "She's right," said Steve. "It may not be too late."

"But how are we going to get there at all, let alone in time to stop them before they all kill each other?" queried Bruce, his brow furrowing.

Steve looked to Tony. "You think you carry some of us if we flew there in your armour?"

Tony raised an eyebrow at him like he was stupid. "Not all of you," he said, eyeing the group.

"How many?" pressed Steve. Tony squinted his eyes. "Maybe two?" he guessed.

Steve nodded before turning to Jason. "Do you think you could fly some of us there as well?"

"Yeah," Jason nodded, slowly. "It would be me controlling the winds though, not me actually carrying you."

"Good enough," agreed Steve. "Now wait a second," started Clint, frowning, not liking the idea of letting the winds carry him rather than an actual machine or even a flying person. He was ignored though, drawing a groan from the archer.

"What about the jet we flew in before?" asked Jason, tilting his head in question. "Shield property," explained Tony, bluntly. "They didn't think it was a good idea to leave something like that here with you both around and possibly using it as an escape route."

"Fair enough," agreed Percy, seeming relieved by the statement. "I was not feeling like testing Zeus' patience right now."

Tony stared at him for a moment before a look of understanding dawned on his face. "That makes so much more sense now," he said, pointing a finger between him and Jason. "Your dad, sky god, and he doesn't like you, and so wouldn't like you flying in his sky."

"Pretty much," shrugged Percy. "Wait, so how do you know you'll be safe to fly now?" questioned Clint, folding his arms.

"I'll be with Jason," said Percy, gesturing to said boy. "Zeus wouldn't risk shooting down his own son just to get to me. Plus, he wants us to get back to Camp. Like, now."

"Alright then," said Clint after a pause, deciding it better not to question anything anymore.

"Guys, we need to get going," pushed Bruce, his eyes darting to the window where the sun had already set and darkness had fallen.

Steve nodded in agreement. "All right. With Tony's suit and Jason flying, it shouldn't take too long to get there. Everyone get suited up as fast as you can. Meet back on the roof when you're ready."

They all nodded shortly before dispersing out the exits.

Once they had all gone, Steve turned to the two boys. "I'll see you both up there?" he asked, though it was more of a statement. They both nodded nonetheless, and the soldier hurried out of the room, leaving just Percy and Jason.

They looked to each other, and a smile cracked on both their faces. "We're finally going home, man," said Percy, huffing a laugh as he spoke.

"Indeed we are. Took long enough. Your temper tantrum really didn't help things," Jason added, earning a light punch to the shoulder. He grinned, rubbing it even though it didn't hurt.

The air seemed to suddenly turn cold, and the lightness they had felt evaporated, making way for worry and fear.

Their smiles fell as they looked outside, thinking they could almost see the fires of Camp from all the way out here.

"We're going to save them," assured Jason after a moment of silence. "I know," said Percy before sighing. "Just thought there would be a bigger gap between this and the last time we had to save them."

Jason laughed. "Yeah, me too," he agreed. He looked over when his friend remained silent. "Percy," he said. His cousin turned to face him, and Jason saw the flicker of worry in his eyes.

"Hey," he said, turning his body so he was looking at him head on. "Everything's going to be fine," he said, looking at him seriously.

"This is bad, J," muttered Percy, shaking his head. "We don't know how many of them are infected. We don't-"

"Percy." Percy stopped talking and looked to Jason, whose gaze was unwavering. "Everything is going to be fine," he repeated, this time with more confidence.

The two stared at each for a long moment before Percy finally nodded. Jason nodded in return and they then both headed for the door.

"Besides," continued Jason. "It's not like the mortals can get in, anyway. What with the border and all."

Percy's face was dark as he replied.

"No, but the infected can get out."