Okay, this story idea came up out of the blew when I thought of Percy and Annabeth going to Lyoko. Then I thought, "What if they encounter William when he's possessed?" Then I kept getting more and more ideas so I'm writing it! I know there is only twelvish stories in the cross-over categories but someone might read it and actually like it.

Disclaimer for ALL chapters so I don't repeat myself: I do not own the PJO/HOO series or Code Lyoko.

Enjoy.

Though the war with the giants had come to an end, there was still something that needed to be taken care of. Something that two specific demigods would have to handle.

"So we have to do what exactly?" Percy asked his old teacher for clarification.

Chiron explained as best as he could. "You and Annabeth have to go to France and save a demigod."

Annabeth inquired, "What happened to him?"

"He disappeared," Chiron adverted his gaze to Percy. "Much like you did, except almost no one knows who he is. All I know is he's Roman and he's important to a camper at Camp Jupiter."

"Who?"

"I can't give you the details," he acknowledged. "The immortals, mainly the children of Zeus, are the ones who are assigning you two the quest. You are to attend a school known as Kadic Academy and befriend a group of students. These students should be able to help you find him or, at least, that's what I'm told.

"Luckily, your late admissions in the school was easy because the principal has a daughter who is a demigod. She managed to bargain with him."

The couple exchanged a questioning look but Percy asked, "Who is she?"

"Me." The two turned around to find it was Drew that spoke. With an annoyed sigh she explained while Chiron walked away, "My father had divorced his wife when I was about five or six. I went with her instead of him. She remarried and I never spoke to my father again. The only reason I was able to convince him is if I'd come visit him."

"Just a little heads up," Drew continue, "he knows about the immortals because he can see through the Mist, so he will excuse any 'misconduct' as he put it. I did try to have you two stay in the same room, since I knew you were sleeping in the same cabin here, but he wouldn't budge. He argued that he is already paying for your tuition so he doesn't need you breaking the rules on the first day."

"Thank you for trying." Annabeth thanked after a moments hesitation. "You've changed a lot since the war started, and that's good."

Drew offered a small smile, but then she remembered something. "Oh! I have a half-sister on my father's side that's also attending the school, she should be in the freshman class. Her name is Elizabeth, but she gave herself a stupid nickname."

"Which is?"

"Sissi."

"How's the depossessing process for William going?" Yumi interrogated Jeremie as she sat down at their usual table at lunch.

"It would go better if I knew where he is on Lyoko." Jeremie confessed with a sigh. "I need a sample of his genetic structure so I know what it is that's making Xana posses him."

"You need to hurry it up." Ulrich advised in a whisper so no one could over-hear them. "After the clone disappeared, everyone thought he left school to stay with his parents, but then they call demanding to know where he is."

"I know, I know." Jeremie repeated in a hurry. "I'm going as fast as I can but the four of you need to-"

"Hey!" Aelita called from the other side of the cafeteria as she ran over to her friends. Panting slightly, she asked, "Did you hear about the new students?"

"New students?"

"Odd is showing them around right now." Aelita stated as she sat next to Jeremie. "They're from a place called Manhattan. I think they should join our group."

"We don't know their names Aelita." Yumi argued. "You know what happened last time we let someone join and why do you think they should?"

"Because the boy made the comment about the girl being a super genius. She can figure out anything and everything about how to work a computer. If you, me and Jeremie weren't there to work the supercomputer, she can do it. Besides, if she's not needed to do that they can still fight in Lyoko.

"They talked about how they went to this summer camp. They learned archery, climbing skills, and how to fight too. They fit the spot perfectly!"

"But-"

"Hey guys!" The group turned to see Odd walking their way with two students who appeared to be a year older than Yumi. The boy had dark black hair and sea green eyes that appeared to glow. The girl beside him was a couple inches shorter than him with blonde hair that was in a pony tail and grey stormy eyes. The group immediately noticed the tattoo on the guy's arm, how they were wearing matching necklaces, and the exposed scars on their skins.

Odd came up to the group with his normal goofy smile on his face carrying his lunch tray. He sat next to Ulrich as he said, "Meet the new students. He's Percy Jackson and she's Annabeth Chase. They came all the way from New York!"

"Hi," Annabeth said almost shyly, "Do you mind if we sit here? Odd and Aelita are the only students we know."

Without a moments hesitation, the group scooted over for their new friends. Noticing the two didn't have a tray, Ulrich asked, "You're not hungry?"

Percy shook his head. "I took her out for lunch before we arrived."

"So you two are. . .?"

"We're dating," Annabeth finished as Percy wrapped an arm around her waist. "We've been together so long that we can basically read each other's mind."

The bell ringed cutting off the group's conversation. "Are you doing anything after school?" Aelita asked the couple. When they answered no she continued, "We're going to show you where we go after school to hang out then. Trust me, you'll love it."

There was a slight problem when the couple went to their class. They were having trouble reading the board when the teacher called on Percy. Percy begrudgingly explained that they both have dyslexia, though his was far worse than Annabeth's. At the revelation the teacher insisted that they go to a 'special' class to get some help. Annabeth, having been offended, refused and Percy agreed with her.

So there were the two, waiting for a 'parental figure' to talk with the principal. After what felt like forever, a parental figure did show up, but not one they were expecting. Walking into the waiting room, wearing casual yet formal clothing, was none other than Poseidon, the king of the seas. He gave his son a knowing wink before walking into the principal's office.

A couple incoherent yelling hours later, Mr. Delmas walked out with his cheeks red from the arguing. He gestured to the office when he told Percy, "Your father would like to speak to the both of you. Once he's finished, I'll have Mr. Della Robbia come and escort you to your shared room on the boy's floor. You are very lucky your father managed to convince me."

Mr. Delmas left while the two entered the office. Percy's father was sitting on the desk as he stared at the paintings on the wall. Noticing that they had arrived, Poseidon adverted his attention to them, "I didn't come here to settle the dispute about the class and living arrangements. I came to give you more details about your quest."

"First off the girl you met when you arrived, I believe her name is Aelita, she was turned into a digital program when she was young," he informed importantly. "She had been stuck in a virtual world for about ten years before someone discovered the virtual world. The friends she has now figured out a way to save her."

"Since the world was discovered the group of friends have been fighting inside the world to stop the virus inside from destroying the world. No one except them and the gods remember it because they can go back to the past before the attack started. You are to help them until you find and save the missing demigod."

"Can you give us any details about this demigod?" Percy asked his father. "It might help us."

"I'm afraid I can't." Poseidon denied. "The only reason I'm the one giving you the information is because Zeus's godly children doesn't want him to know about the quest. They want this demigod saved to thank the one that saved their sibling. Since Athena and I have agreed to a peace treaty, I volunteered to tell so he wouldn't get suspicious. Although I was told you were given permission to tell the group about the gods if you think it will help you on your quest."

"So we don't get a name?" Annabeth inquired on.

"No, but I was asked to give you some advice that you need to remember for the future." Poseidon leaned forward as though he was to tell a secret. "Don't be afraid to ask for help."

I'm just gonna end the chapter there. I've decided that I'm only going to add chapters if someone requests it. It would be a waste of my time to continue the story if no one is actually reading it.

Anyways, thank you for reading and please review!