Code: Amnesia

After two mysterious X.A.N.A. attacks, Yumi and Aelita cannot remember anything about themselves. And worst of all, X.A.N.A. convinces the Lyoko Warriors to let him help them restore their memories. Can they trust him to do what he promises? Find out in this story.

Chase, Jennifer, Dylan, and Rebecca belong to I heart Lyoko.

Disclaimer: I do not own Code Lyoko or its characters. I do own X.A.N.A.'s Lyoko form.

Chapter 1: Decision and Attack

On Lyoko

X.A.N.A. was laughing maniacally as he was finished with the virus.

"Finally, I have it finished. Now, which two will I choose?" He asked as he started pacing around the throne room while a special tower directly linked to the virus was being created.

"I've already used a similar virus on Stern, and that backfired. William is useless to me now. Belpois doesn't even come here. Della Robia's absolutely out of the question. Ishiyama is one I could consider. The Enheart brothers won't be much help. Townley is of no use to me, neither is Hudson. That only leaves the Hopper girl." He said to himself, chuckling evilly as he decided it would be Yumi and Aelita who would be implanted.

"Now, which tower should I use? I'll have to use a specter in order to get Ishiyama here. I'll use her headmaster to bring her here." X.A.N.A. said as he activated a tower and sent a specter to pick up Yumi. The specter possessed Jean-Pierre Delmas and X.A.N.A. gave him his orders.

"Delmas, bring Ishiyama to me. And do not let her friends follow you two." He ordered as Delmas went to the library to abduct Yumi. He made it to the library when Jim noticed him.

"Something wrong, sir?" Jim asked.

"Miss Yumi Ishiyama, I would like to have a word with you. Jim, make sure no one leaves this library." Delmas ordered as Yumi stood up and left with him. Jeremie saw X.A.N.A.'s symbol in his eyes but was stopped by Jim.

In the park

"Aren't we going to your office, sir?" Yumi asked.

"No, I'd rather stay on the campus." He replied.

"And I'd rather we went to your office!" Yumi retorted, making X.A.N.A. angry.

"Bring her here by force." X.A.N.A. ordered as Delmas turned to electrify her. She dropped to the ground, unconscious. While he was making his way to the factory with the unconscious Yumi over his shoulder, the others tried to get past Jim and succeeded. They made it to the park as Delmas ran through the sewers to virtualize Yumi.

"Just think what'll happen if the return to the past doesn't work." Odd said.

"He's right. Jim will bloody kill us." Rebecca said.

"We've got bigger things to worry about now." Chase said.

"Yeah. Compared to that, Jim's a piece of cake." Dylan said.

"Yeah, but what does X.A.N.A. want with Yumi?" Ulrich asked.

"He's right. Usually, he comes after me." Aelita said.

"We'll worry about that later." Jennifer said as Delmas was in the scanner room and dropped off Yumi in one of the cabins.

"As soon as she is virtualized, do everything that is necessary to prevent her friends from reaching Lyoko." X.A.N.A. ordered as Delmas followed his orders.

In the Forest Sector

Yumi was virtualized while still unconscious. A familiar screeching could be heard heading her way. The Scyphozoa was en route to the Japanese girl.

In the lab

Jeremie, Jennifer, and Rebecca arrived with Aelita to find Yumi was already on Lyoko.

"He's virtualized Yumi. She's in the Forest Sector. I'm sending you three in right now." Jeremie said as the three girls went to the elevator.

On Lyoko

Yumi was beginning to come to. "Jeremie, can you hear me?" She asked.

"Yes, Yumi. Hang on. The other girls are coming." Jeremie said as she heard a screeching sound and turned to see the Scyphozoa. She then ran from it.

"Hurry! The Scyphozoa's going after Yumi!" Jeremie said as the scanners closed.

"Transfer Jennifer! Transfer Rebecca! Transfer Aelita!"

"Scanner Jennifer! Scanner Rebecca! Scanner Aelita!"

"Virtualization!"

The three girls arrived on Lyoko to see Yumi running from the giant jellyfish. "Yeesh! Still as ugly as ever." Aelita said.

"We thought you liked seafood, Princess." Jennifer said.

"Not the nasty kind. Let's go." The angel ordered as the three of them broke into a run.

"Oh no you don't. Krabs, attack!" X.A.N.A. ordered as three Krabs were virtualized.

"Wow. X.A.N.A.'s sent us an entire seafood platter." Rebecca joked. The three girls began to fight the monsters while Yumi tried to draw her fans only to find that she could not.

"Jeremie, where are my fans?" She asked.

"I don't know. Something's blocking me from sending you your weapons. Try to dodge its tentacles until I can identify the problem." Jeremie said as the ninja began using her agility to avoid the tentacles.

"Aelita, Jennifer, Rebecca." Jeremie called to the three girls.

"Yes, Jeremie?" Aelita asked.

"I can't bring Yumi her weapons. X.A.N.A. must be jamming the program. Oh no!" He said.

"What's wrong?" Rebecca asked.

"The Scyphozoa has caught Yumi! Aelita, can you try to reach her?" He asked.

"I can try." She replied as she activated her wings.

"Shoot her down!" X.A.N.A. ordered and she was shot and fell to the Digital Sea.

"MANTA! SAVE HER!" X.A.N.A. ordered as a Manta flew in and saved her, confusing her and the others.

"Huh?" They all asked as the Manta dropped the angel off and then devirtualized. While they were trying to understand why this happened, the jellyfish like monster finished uploading the virus, and the tower deactivated, giving Jeremie the codes to return to the past.

"Return to the past now." X.A.N.A. said as he started the jump back in time and activated Yumi's virus.

In the school courtyard

"Did you deactivate the tower, sis?" Chase asked Aelita.

"She didn't. It deactivated by itself." Jeremie said.

"Then why was there a jump back in time?" Ulrich asked. The others shrugged.

"Look, there's Yumi." Odd said.

"She looks confused." Rebecca said. They all walked up to her and she was even more confused.

"You all right?" Jennifer asked.

"Who are you guys? Who am I?" She asked, causing the others to go wide eyed.

Can the Lyoko Warriors help to restore their friend's memories or will another Warrior join her? Find out as the story progresses. Review and I'll post more chapters.