Okay, guys. I know I have written other stories, but those will be put up for adoption so I can focus on this one. This is my favorite story that I've come up with so far, and I already have most of it planned out. Sorry if you were wanting the other stories!

Chapter 1

Steve

The Avengers were gathered together today. Not the new ones that Natasha and I had been training, but the original team, because Fury had insisted that he needed us, and the new Avengers weren't exactly a team yet. I have no idea what could be so bad that he would assemble us again, but whatever it was, Fury must be desperate. We met in an old warehouse. Nobody knew we were here, meeting with Fury.

"A new threat is coming." He paused for dramatic effect. "A new war."

These few words, of course, turned our faces quite serious. We all knew what war brought. Nothing but death, sadness, and despair. He must have seen our faces and knew that we were thinking of Ultron, and Pietro, because his voice softened a bit. Not as hard as steel anymore, more like rock hard.

"I have intel that what's coming can't be stopped by us, not by a long shot." Fury said grimly.

"Than why are we here if it's a hopeless cause?" Tony asked quietly.

"We fight because we are the last defence for the earth. Without us nobody will have hope, and even if our fighting is hopeless, it's not pointless. We fight because there is nobody else to fight." I said, glaring at Tony.

"I agree," Thor said. "If we die, we die with honor."

His words didn't do anything to boast morale, but did make everyone realize we had to fight. Even if we all went down, we would go down together.

Fury cleared his throat.

"I don't know exactly what is coming, but we have a chance if we recruit these two."

He showed us a picture of two kids, around seventeen. They were bloody, bruised, and looked horrible. They were clutching each other tightly, as if without the other the world would be destroyed. They were obviously a couple, and a pretty serious one at that.

The male was pretty tall, with messy black hair and tanned skin. He looked quite muscular, even though you could tell he hadn't been eating properly in at least a week. The girl had blonde curly hair and tanned skin also. She was muscular too, and looked starved.

What was most unnerving though, were their eyes. The boy's were sea green and reminded me of the ocean, swirling like a storm. The girl's were a stormy grey and she looked deep in thought. Even if it was just a picture, her eyes seemed like she was analyzing me, to see my weaknesses.

Both of them had a certain shattered look in their eyes, a look I knew all too well. They had the eyes of a battle-ridden soldier, even though they couldn't possibly have been in battles. Even so, their eyes were worse than a soldier's, they looked as if they had seen and gone through things nobody should ever see.

It was creepy how I had accessed them so well in just a picture. Then that got me thinking. Fury wanted kids to fight with us? Why did we need them? Our new team of Avengers would be a better choice! I didn't want these two to know the horrors of war. They were too young. They didn't deserve to know the consequences of war.

"You want children to fight with us?" Thor boomed loudly.

"They're just kids!" Natasha argued.

"They probably don't even know how to fight!" Clint said.

"They'd just distract us." Bruce said.

"They don't deserve to be shoved into a war." I said stubbornly.

"They could mess up my tower!" Tony protested.

Everyone just stared at him.

"What? Does nobody care about my expensive tower that took forever to construct?"

Natasha proceeded to drag Tony into the other room. We could hear Tony's muffled yells and protests and did the smart thing. Ignored them. About ten minutes later Natasha calmly walked back into the room with Tony close behind, drenched in a mysterious liquid with multiple bruises.

"These two have to fight with us, or the world will be destroyed and billions of civillians killed." Fury said.

"What's so special about these two?" Clint asked.

"I have no idea, but I know for sure that without them we will definitely lose this war."

Everyone quieted down, somewhat trusting his judgement, somewhat wondering if he was mad.

"I want you to find them and recruit them to the Avengers."

Nobody said he was crazy, but nobody wanted two kids on the team.

"This is Perseus Jackson and Annabeth Chase, two seniors at Goode High School. This picture was taken two months ago, in Greece. They live in New York. Anything else you need to know you're going to have to find out yourself. Try and bring them in relatively unharmed."

"Yay! We're going to go kidnap some teenagers!" Tony exclaimed sarcastically.

"We're not kidnapping them, we're bringing them in." Clint said, rolling his eyes.

"That's what I said, kidnapping." He replied.

Clint just groaned while Tony smirked.

Well, whether we liked it or not, Perseus Jackson and Annabeth Chase were joining the Avengers, for better or worse.

Percy

I was walking home from school with Annabeth. She and I had spent a lot of time together since the war. Leo, Jason, Piper, Hazel, and Frank, all dead because of me. Because I wasn't strong enough to protect them.

Sometimes I feel like Annabeth is the only thing keeping me on this Earth. She is my anchor. Without her I would be dead, or quite possibly insane. We both know that Tartarus is planning something. He keeps sending us visions and he killed the Seven.

Tartarus left us alive so we could see how utterly useless we were and know that we could do nothing to stop him. Too late, I realize my mistake. I dwelled on the past too much, and now I have to relive it.

I feel Annabeth grasping my hand, and hear her saying something, but it feels worlds away. I soon find myself slipping into the darkness.

It was a few months after we won the giant war. Leo had surprised us all by coming back on Festus with Calypso hanging on. Everyone was angry with him for not telling us sooner, but he said he had to go get Calypso and took her to see the world.

We didn't blame him, and everyone had a big celebration. Leo had told us that Festus had injected the Physician's Cure into him, and he had to follow through on his promise to Calypso. Piper was going on about how cute that was, her Aphrodite side coming through.

It was bit awkward between Calypso and I, seeing as I practically abandoned her and ddn't make sure the gods followed through on their promise, but she was happy for Annabeth and I. She said she had Leo now, as annoying as he was.

That night, right after everyone except the Seven went back to the cabins, Tartarus came. The ground started shaking, and he rose out of the earth. His purple skin glistening, his black talons, his Stygian Iron boots as big as coffins, his breastplate with the faces of monsters pressing against it, as if trying to escape.

His face of course, was just how I remembered it. Absolutely terrifying. The swirling whirlpool, the inward spiral of darkness makes me want to hide away. I uncapped Riptide and held onto it tightly, not wanting a repeat of what happened in Tartarus.

I can sense your fear little demigods. Usually puny demigods such as you are never worth my personal attention. Tartarus said, his voice sounded like a recording played backwards.

I can always make an exception though, especially for you two, who escaped me with the help of my disgraced son and that accursed titan.

He indicated Annabeth and I.

I looked around and saw my friends stunned, they hadn't even drawn their weapons yet, and even I knew it was pointless. Annabeth seemed deep in thought, trying to think of an escape.

You cannot escape me! I will have my revenge and reawaken my beloved Gaea!

So he was trying to reawaken her. Tartarus alone was unimaginable to defeat, but Gaea at his side? Five times worse.

For every demigod soul I add to my armor, a piece of her consciousness is summoned to me. She will soon wake and we shall have our revenge! I will start by killing you, to send a message to all demigods that I can kill you all with a single thought.

Before I could do anything, Leo, Jason, Piper, Hazel, and Frank were sucked into his horrible maw. Thousands of thoughts were running through my mind, none of them good. This would be hopeless. He's going to kill Annabeth too! Why am I so useless? I can't protect anyone, especially my friends.

Annabeth put her hand in mine, her drakon bone sword drawn. Her eyebrows were furrowed in thought and her face jolted me back to reality.

You can't do anything to stop me! The reason you're still alive? I want you to know how utterly useless you two are. I want you to see the world burning and know you can't do anything to stop me. You too will be the last I sacrifice to Gaea. To prove you did absolutely nothing to stop me.

Tartarus disappeared into the ground, leaving me with Annabeth. I knew that she blamed herself for their deaths, but I know I could've done something. I could have saved them. Now, because of my inability to protect them, they're gone. Forever.