AN: I've gotta stop making new stories. Especially if they're cliches. Anyways, hope you enjoy my first ever crossover fanfic, courtesy of a passing interest/boredom. This takes place between Age of Ultron and Civil War, as well as during The Last Olympian. Sorry if I get some facts wrong, as I am not an entirely avid Marvel enthusiast. Oh yeah, and Percy and Annabeth's relationship is that of siblings.

..

Manhattan was quiet. Unnaturally so.

At Avengers Tower, however, they were all unaware of the fact. Kind of hard to, when they were in the middle of a free for all, courtesy of someone accidentally breaking Bruce's glass figurine collection, who then took out his anger on a certain Asgardian, smashing him into several of Tony's new toys. Said person was not a morning person, especially when he didn't even have coffee yet.

As such, Scarlet Witch, Vision, and Captain America stood by the couch, as roars of battle and repulsor beams whizzed through the air. Currently, Rhodes and Wilson were out on business, and not even Vision wanted to play peacekeeper in the morning chaos.

"Sir, I believe I have found something of interest."

That was Jarvis, reinstated as the Tower's personal A.I., fixed by Tony after the fiasco in Sokovia.

Tony didn't even spare a moment's reprieve from the fight, as he yelled, "Not now, Jarvis! Wait until I fry Thor's cape or something!"

"...Understood, sir."

Steve sighed, as he walked to the elevator. "Don't worry, Wanda. This is… normal, for us."

Following him, along with Vision, her eyebrows creased in concern. 'You realize that makes me worry more, right?' she thought, glancing back at the devastation.

"Excuse me, Captain. Shouldn't you try to stop them? This is quite nonsensical, especially since it's due to a mistake by Clint Barton."

Unfortunately for the archer, Hulk heard the android. "Clint did that? CLIIII-"

His roar was cut short, as Thor threw his hammer at his chin sending him stumbling back. Glaring at him, he decided. Hammer Man, then Tin Man, then puny Arrow Man.

Sighing, Captain America sighed as he pressed the floor one button. As he waited for the elevator, the two S.H.I.E.L.D. agents emerged from the training room on the other side of the room.

"Hey, Cap! What's up with them this time?" Clint yelled across the room, clearly not bothered by the commotion. Much.

Captain America sighed for what must've been the thirtieth time that morning- actually, it was almost noon by now. He might've actually felt pity for the blond agent, if not for the problem he caused.

As Wanda cast him a worried look, Hulk whipped his head around. Arrow Man!

Roaring, he charged at him, as Natasha quietly snuck around the room to join up with Cap and the new recruits. Ignoring the yells of pain behind her he exchanged a glance with the 'man out of time'.

"So, where should we go for brunch?" she asked casually, dismissing Hulk's probable torture of her teammate, as well as the god fighting the billionaire behind her. "And where's Pepper? She's usually here to control Tony."

Captain shrugged as he turned back to the elevator, which had just arrived. "I was thinking the place across the street, the one with croissants. I'm not sure where Pepper is, though. Haven't seen her all morning. Maybe she went out early? I don't think she's the type to sleep in."

Jarvis refuted the idea, as he reported, "Negative, sir. She is still currently in her room."

The group of four stepped into the elevator, as it went down. The two experienced Avengers chatted about past missions, and combat tactics. Vision, as usual, was silent, as was Wanda.

After a minute or two, a quiet 'ding' signaled that they had arrived at the lobby, and was prepared to walk into a room filled to the brim with bustling businessmen. However, that was not the case.

Instead, everyone was asleep, mostly on the chairs or leaning on furniture, but some were simply down on the ground, snoring.

"Jarvis? What is this?" Natasha asked, waiting for a response. Obviously, she got one immediately.

"This was what I wanted to inform Mister Stark earlier. Apparently, the entire city is asleep, except for a group of teenagers quickly spreading out. Wi-Fi and electricity is quickly shutting down, so I activated the backup generators for now."

Nodding, Captain America went to the door and glanced outside. "He's right. For some reason, there's no car crashes, but everyone is asleep. Let's go see if we can catch one of the kids."

..

Connor and Travis Stoll were having the time of their lives, having told the Hermes Cabin to go on ahead. Of course, they felt a bit guilty about stealing… Yeah, right. That'd be the day the world ends.

Currently, they've raided three candy stores, two toy shops, and a thrift store on their way to their allocated positions. Armed to the teeth with slinkies and gum, they began to join up with their groups.

"See ya later, Connor!"
"Don't die yet, Travis!"

As soon as they turned around, though, a commanding voice yelled, "STOP!"

Eyeing the source of the voice, they found it was a group of four. Two women, two men.

The man in the blue costume stepped forwards, and spoke in a stern tone. "What do you think you're doing, young men?"

Exchanging glances, the two look-alikes walked backwards slowly, hiding their loot behind them.

"Umm… Protecting Manhattan?" Travis asked, smiling weakly as his brother quickly nodded his head in agreement.

The woman in the black suit raised an eyebrow, but remained quiet, as did the other woman in a red jacket, and the man wearing a green suit. Was that red skin?

"By robbing stores? Tell us what's going on. Why is everyone asleep?" the man in blue demanded, still advancing.

Suddenly, Connor held out a hand, signaling 'halt'. The two then turned around and spoke in hushed voices.

"Should we tell them?"
"No way! Percy will get mad!"

"Then what should we do?"

"Should we run?"

"That lady has a gun!"

"We should've picked up a smoke bomb…"

Suddenly, the cocking of a gun froze them in their tracks, and the redhead started walking towards them as well. "Tell us, or I'll tranq you, and send you to the police."

At this, the two grinned widely, and spoke in unison, sticking out their tongues. "Can't! We got blacklisted from jail!"

She shrugged. "Then I'll send you to the government. This could be classified as a national threat, you know."

The smiles vanished at once, as Connor held up his hands in surrender. "Alright, alright! I'll call Percy over!"

Travis glared at him, though he held his hands up as well. "Traitor! Percy's gonna be mad we didn't go where we were told to go!"

The boy glared back, as he retorted, "But you're doing the sa-"
"Enough. Call 'Percy' or whatever, just do it quickly!" the man in blue demanded, as the four stood in front of them.

Connor looked at him sheepishly, and responded, "So… can I borrow your phone?"

..

Percy's phone rang, just as he emerged from the river. He quickly dried himself, gave Annabeth a lopsided grin as if saying 'told ya I'd be alright', and picked up the phone. His smile quickly turned into a frown, and he exchanged a glance with Annabeth.

"Hello? Yes? Connor, you say you found some clear sighted mortals awake? On the intersection of Madison and East 38? What the heck are you doing there? Hang on, I'll be right there."

Closing it, he turned to the girl he saw as a sister. "Sorry, Annabeth. Gotta go, see if you can join up with the Athena Cabin?"

Receiving a nod in response, he took the 'borrowed' motorcycle and began to drive the 3.7 miles to the designated location.

After 4 minutes or so, he came into view of four strangely dressed men and two nervous twins. "Hey, Connor, Travis! Why the heck are you here?"

Travis shot his twin a glare, and turned away, whistling innocently. Gulping, Connor opened his mouth, and tried to speak, but Percy shushed him, looking West. "Nevermind that, just get to your positions!" he demanded, shooing them away with a glare.

Rubbing his forehead in exasperation, he turned back to the four strangers, dipping his head. "I'm sorry about that, but I really gotta go. With those two, we could probably hold Brooklyn Bridge and Manhattan Bridge, and I already took care of the Hudson and East. I'm worried about the Queens-Midtown Tunnel though, they really aren't suited for fighting… Thank the gods the hunters arrived, Lincoln Tunnel is definitely safe. Annabeth will help hold the 59th, and we can send the ones at Holland Tunnel to backup the Brooklyn-Battery Tunnel, and I'll help out at Williamsburg Bridge… Yes, then we'll send the extra troops back to Holland to reset traps…"

After the first sentence, he began to mutter, tapping his foot rapidly. He snapped out of it when the man in blue put a hand on his shoulder.

"Son, tell us. What's going on?" he asked soothingly, seeing he was under great stress.

When Percy realized that he was speaking aloud, his cheeks reddened and he laughed awkwardly. "It's nothing, nothing. Just talking about… a game, yeah, a game! Oh, and you guys should probably take shelter, just as a precaution?"

The redhead noted he was constantly sending glances into the sky, as if warning something… or someone not to come out. "Vision, check for anything up in the sky," she whispered, before turning to the boy, stalling. "Subtlety isn't your strong suit, is it?"

He nodded rapidly, hoping to change the subject. "No, it isn't. But still, I gotta go. Good-"

Without warning, the man in blue motioned to the brunette, and she placed her hands on either side of his head before he could react.

..

Yeah, this is a bit longer than usual, but I just got access to a computer, hooray! Please tell me if this was horrible, or if was decent. I hope you liked it?