(A/N)Here is my new Percy Jackson and Avengers crossover. I've been debating writing one for a while now, and I hope you all like it! This story takes place after Percy and Annabeth escape Tartarus.

Disclaimer: I do not own Percy Jackson or the Avengers, I wish I did though.

(Prologue)

Facing impossible odds and certain death as an evil deity tried to take over the world was something Percy just got used to.

Percy didn't know how long he had been fighting, all he knew was that they were almost out of time, and then she would wake. Percy threw a glance off to the side to see the massive human-like shaped spire of a woman rising in middle of the Parthenon, ready to exact her revenge.

"Duck!" Percy heard Annabeth scream as she tackled him to the ground.

Percy hit the dirt as a giant spear flew less than two inches above his head. Annabeth was always by his side knowing that he would be dead in seconds if she wasn't there to save him.

Above him was Zeus, bashing the giants with his master bolt over and over again, but with little avail. Most of the others where off to the side, wounded and fatigued, watching the three of them in anticipation and horror. The only reason Zeus was still up was that he drew strength from the sky, in other words, every time he breathed it was like taking a twenty minute rest. Unfortunately the same was true for the giants, except they were getting stronger as their mother rose. As Percy fought the coming onslaught of the giants he thought of the past few hours.

He and Annabeth had made it out of Tartarus with their sanity only barely in check. The only sliver of hope in their own personal hell being the fact that they stood together. The things Percy had seen in there. . . they were the stuff that would plague him for the rest of his days. He'd often hear the sickening laughs as his enemy's tortured him, or hear the whisper of pure insanity as the pit tried breaking his mentality. After the whispers came the moans of pain and then finally the visions.

Most visions showed Annabeth's death in the cruelest ways possible. Others showed the death of his family, camp being destroyed, his tortures in Tartarus, and the destruction of earth as chaos reined order. Percy was fighting for everyone he had known, his family, his friends, his home, but last was himself. If the world fell he would not matter.

The others where all sitting by the Argo II, a safe distance away, trying to heal their wounds as fast as they could. They had all taken a beating, even the gods, and running into battle so weak would doom them.

A sonic boom shook the battle field as Zeus's master bolt blasted Porphyrion backward. The giant came back up, looking mildly annoyed. He screamed as Percy drove his sword into the giants' foot. Percy side-stepped another swing from the giants spear. All the other giants had been defeated, but no matter how hard they tried they couldn't take Porphyrion out.

When Percy checked by his side, Annabeth was gone. about two hundred feet away, Annabeth was on the laying on the ground, her feet and hands encased in rocks, with Kato standing over her with a knife in her hands. Percy watched in horror as the knife sunk into his girlfriend's gut.

Percy charged right into Kato and sliced her head clean off. He knelt next to Annabeth's lifeless body.

Annabeth looked at Percy with glassy eyes and croaked "Percy…"

"I'm here, I'm here."

As he looked at the wound his face turned ashen gray.

"Oh gods, no, Annabeth, you are not dying on me."

She spat some blood out of her mouth. "Percy…" she looked at him with a sad look. "It's no use."

"No, tell me what to do! You always have a plan. Just tell me what to do!" he said frantically shaking her. This was not happening, his wise girl was not dying on him.

"Percy stop. It's no use. The blade is already through." Her breathing was becoming shallow; and her face had gotten pale as her hands became colder.

Percy looked at her with eyes full of tears "No, please, I can't lose you." He whispered. "Please, I need you."

"You'll never… lose me" she struggled to breathe. "We will see each other again. I'll wait for you in Elysium."

Tears flooded Percy's vision. Why were the fates so cruel? What did they do to deserve this?

"Promise me…promise me that you won't get killed. Try to be happy. Only in time will I see you again."

"I..I promise." He whispered.

She nodded and smiled, but it was faint, as if she was fading. "Tell them, sorry." She was almost gray now and her eyes where lifeless." And Percy…I love you…"

Annabeth's body went slack and she was gone.

"No." Percy shook violently. "NOOOOO!"

Back at the battle Zeus noticed that they had left.

Porphyrion taunted him. "Is this the god's of Olympus last stand? Pathetic."

Zeus was worn out. He couldn't go much longer. As the other gods watched Zeus, Athena looked around, "where's Percy and Annabeth?"

Suddenly a roar flew across the battlefield.

"What was that?" Porphyrion lowered his spear.

There was silence as everyone looked around. Then all hades broke loose. Percy rode on a wave right into Porphyrion and started beating the crap out of him. Everyone's eyes popped open as they watched in amazement. Athena noticed that Annabeth was nowhere to be found.

Percy stabbed the giant in the face, then ran up to Zeus. "Uncle, I need you to blast me with lightning."

Zeus looked at him with a confused look. Did the kid crack? "Nephew do you know what you are asking?" "Yes, I need you to blast me with your most powerful blow as I drive my sword into the giant."

Zeus looked over to Poseidon. "I can't."

"Uncle if you don't, Gaea will rule the world. If I die, I will be where I want to be."

Zeus sighed. "If we make it out of this, please reconsider my offer."

Percy nodded but knew he would never choose godhood. All he wanted now was to be with his wise girl.

As Percy charged the giant, Zeus lifted his master bolt and charged it with all the force he could muster. Then he let it fly.

As Percy charged right into the giant and felt the lightning go through his body, to his sword, and into the giant, he only thought about his wise girl.

As the others watched, a giant mushroom cloud formed over the giant.

"NOO!" Poseidon screamed. His favorite son was most likely incinerated.

As the smoke cleared everyone looked at the crater where Percy had been to see the giant melt back into the earth and to reveal…

Nothing.

Percy didn't know how he survived. As he looked at the giant he thought of what Annabeth had said. "Don't kill yourself" he looked down at the giant then ran away to fulfill his promise.

The fates looked down at the hero.

"Do not fret, young hero. You will see the daughter of Athena again. But we have a task for you first, and it will either save our existence or destroy us all.

(A/N) So that's the prologue. Did I read House of Hades, and didn't I read Blood of Olympus? Yes I did but I thought that to fit this crossover I would alter it, to fit with the story. Leave reviews! Also I am currently working on another story, but I want you guys to come up with your own characters for it. 5 people will have their character's put into my story for the main character's and a few more will be added as minor, so send them in!