HI GUYS! This story takes place during Harry's 5th year at Hogwarts and after BoO. There will be some noticeable changes. For example, Sirius Black is no longer a fugitive. :)

Disclaimer: I'm not Rick Riordan or J.K. Rowling (obviously)

Edit: So i'm working on editing chapters 1-4 (and maybe 5).

Chapter 1

At Hogwarts: Dumbledore's POV

In that moment, all of Professor Dumbledore's years seemed to catch up to him, revealing the old man he really was. He sat in his study flipping through pieces of parchment that he wished didn't exist. A family tree. But not just any family, it was the Riddle's.

Dumbledore sighed deeply as he read the paper one last time. The tree should have stopped with Tom Riddle. If it had, it would make things so much easier for Dumbledore. But now, a new variable was thrown into the mix. A variable that Dumbledore wasn't sure he could control.

This new discovery could be their undoing. If Voldemort got his hands on the boy and trained him properly, this could change the tide of the upcoming war. Dumbledore couldn't let that happen. Tom Riddle had been a promising student who was full of magical potential. The boy would likely be the same. Dumbledore couldn't let him fall into Riddle's hands for his own reasons, but also the safety of the boy's.

This boy was Voldemort's grandson and his name was Perseus Jackson.

At Camp Half-Blood: Percy's POV

Percy hadn't had a good night's rest in ages. At least, that's what it felt like. He hadn't slept more than four hours since, well the pit.

Which is why Percy was awake at this ungodly hour in the morning, sitting in his bunk and staring at the ceiling. He sluggishly wondered why they couldn't remove some of the bunks in his cabin and instead replace them with a larger bed. Maybe a queen mattress. With lots and lots of pillows.

Suddenly aware of the state he was in, Percy stripped off his shirt in one fluid motion. His clothes were absolutely drenched in sweat, a gift from the terrors he experienced at night.

Percy stripped of his t-shirt in one fluid motion, wishing that his son of Poseidon powers worked on sweat. With a flick of his hand he could be completely clean, and it could save him several loads of laundry during the school year when he lived at home. But nope, he was still stinky.

Percy replaced his shirt with a Camp Jupiter one and stepped outside his cabin. The cool breeze rushed through his hair and Percy breathed freely for the first time in hours. The crisp, clean air helped remind him that he was no longer in the pit. He was no longer breathing the poisonous fumes and drinking lava to stay alive.

Percy slowly made his way to the beach, taking in the scene as he walked. The camp was deadly silent, but not in a bad way. He could hear the crickets chirping, and the gentle lapping of water on the lake.

It was peaceful.

So peaceful that Percy almost found it hard to believe that the camp had been through two wars. Everything was almost back to normal. Everything except the campers. Buildings could be repaired, but there was no erasing the physical and mental scars that many of them bared.

Percy stepped into the water. His toes curled around the soft, white sand and he relaxed slightly. Just slightly. He was always on alert, watching for possible threats. An instinct that came in handy, but made it difficult for him to act at ease. The water was his safe place, a place where he could be just Percy. He didn't have to be the Hero of Olympus, or one of the seven. He could just be himself.

The only other time he felt like this was around his mom or Annabeth. They never expected him to be something that he was not.

Percy was now waist deep into the water, and he wasted no time in submerging himself completely.

Even after all these years, Percy still marveled at the ability to breathe under water. It never got old. He loved the feeling of sitting under the water without a care in the world, watching the fish swim by and air bubbles float to the surface.

He had come down to the lake more and more, after realizing that it was the only place that helped with the nightmares. At first, the other campers were overly sympathetic. They would send both him and Annabeth sad looks, and try to help.

But after a few months they gave up.

Deep down, Percy knew that there would be no end to the nightmares. They might fade, but would never be fully gone. They would always be there, just like the large assortment of scars circling his body.

He would never truly escape Tartarus.

At 12 Grimmauld Place

The tense atmosphere seemed to radiated throughout the room. The Order of the Phoenix had gathered around the dining room table, and each member was worried in their own way.

Albus Dumbledore had sent word that he would be arriving with important information concerning Voldemort, but hadn't bothered giving any more clues.

"Do you- do you think that he's coming for Harry?" Molly Weasley asked, concerned. Over the years, she had began to integrate Harry into her family, and she shuddered at the thought of something happening to him. It would be like losing one of her own children.

The other members turned to look at her, sympathetic yet unresponsive. They knew that they couldn't provide comfort to her. Nobody knew what Dumbledore had to tell them.

It was finally Sirius who answered, "I don't know."

His quiet tone of voice - so unlike the loud and boisterous man he normally was - rippled through the room. Sirius sighed and placed his head into his hand.

CRACK!

They all straightened up as Dumbledore apparated in, each person eager for information. They all hoped that somehow it wouldn't be a threat to Harry's life.

"Thank you all for gathering. An

opportunity for a possible… ally in the upcoming war has recently come to my attention."

Molly sighed with relief and Sirius seemed to relax slightly. Harry was safe - for now.

"Who?" Tonk's question was simple, but she asked what they were all wondering.

Why hadn't this asset been available before? They could have used help in other situations.

Dumbledore took a breath, preparing himself for the hurricane of questions he was bound to receive.

"Voldemort's grandson." He stated it clearly with no emotion.

"What?!"

"How's that possible?"

"How long have you known?"

"Is he a wizard?!"

The headmaster held up a hand, silencing the room.

"I'll spare you the finer details, but Riddle's daughter was sent to an orphanage in America as a baby. When she was adopted, she was named Sally Jackson. Currently she is living with her husband, Paul Blofis, and her son, Perseus. Paul is Perseus's stepfather, and we do not know who his biological father is."

He paused, taking a breath. "Any questions so far?"

"How old?" Tonks said quietly.

"Pardon?"

"How old is Perseus?"

Dumbledore grimaced slightly, "Seventeen."

"You can't just expect a seventeen year old to join us in a war! Does he have any magical training?" Molly frowned, clearly unsettled. She wasn't going to drag another child into their fight.

"Perseus is a wizard, but since his mother is a squib, he possess no knowledge of the wizarding world."

Molly looked like she wanted to interrupt, but kept silent.

"If I was able to find this information, Voldemort will too. It's safer, and better for both Perseus and us if we talk to him. I was hoping that he would attend Hogwarts. Maybe the same year as Harry?"

No one argued. They were all still processing the new information given.

"Lastly, I need someone to accompany me as I get Perseus. Anyone?" Dumbledore looked around the room expectantly.

"I will." Sirius stood up.

"Then let us be on our way."

At Camp Half-Blood: Percy's POV

"Percy?" A soft knock on his door quickly followed.

It was Annabeth. He would recognize her voice anywhere.

Percy's face lit up slightly as he opened the door. Annabeth stood outside his cabin, dressed in jeans and a baggy shirt. Her hair was pulled up in a messy bun, and she looked like she just came out of bed. However, Percy assumed that was not the case.

Looking closer, he could see the dark bags beneath her eyes, indicating that she hadn't slept well either. The nightmares still haunted them both, and Percy had his doubts about whether they would ever go completely away.

"Chiron needs you." Annabeth frowned. "Apparently there are people here to talk to you."

The statement in itself was rather odd. Camp Half-Blood never had just visitors. The only people who might come to see him were the Gods, the hunters, or demigods from Camp Jupiter. However, Annabeth referred to them as "people," meaning that she didn't know who they were.

Percy sighed. He wished that he could have just one normal day.

"Let's go."

They walked side by side to the Big House, both relishing each other's closeness. It was reassuring being by Annabeth's side. She meant everything to Percy.

Suddenly he paused mid-step, noticing something strange. Normally, campers walked around carrying weapons and satyrs roamed freely. Today Camp Half-Blood looked almost like a normal summer camp. The lava rock wall had no lava and the satyrs were wearing fedoras, jeans, and fake shoes. Most campers walked around doing normal, safe activities.

Annabeth looked over and saw Percy's cofused expression. "These visitors are mortals," she whispered. "Somehow they past the border and they want to see you."

Mortals? Past the border? Percy didn't understand. They couldn't just show up. That's not how it worked. Also, what mortals did he know other than his mom and Paul. Students from one of his past schools?

Percy's stomach twisted. This didn't sound good. But Percy didn't say anything, and continued to walk in silence with Annabeth.

When he stepped into the Big House, Percy's gaze was immediately drawn to two men - both strangers.

Why were they asking for him?

Percy didn't even want to comment on the strangers' attire. The older of the two men was dressed in deep purple robes. When was that considered fashionable? He almost looked like a character from a fairy tale. He unnerved Percy.

"Well Dumbledore," said the younger man. "I don't really see the family resemblance. After all, he has a nose."

Percy just stared.