I don't own Harry Potter or Code Lyoko

False Start

The five students walked into the class.

"Hey, relax Aelita, don't worry! It's just a history class," said Jeremy as he tried to calm Aelita down.

"I'd feel a lot better if it were a class on computers. I don't know anything about history!" said Aelita worriedly.

"That's just it; you're here to learn! If it were a computer class, you could be the teacher!" said Ulrich as he put his hand on her shoulder.

"Take your seats," said the teacher.

"Hmph! Just who does that new girl think she is? All she cares about is having boys around her!" said Sissi as she watched Aelita.

"Actually I think she looks worried!" said Nicholas as he looked at her.

"Obviously Nicholas you don't know the first thing about girls, hmph! Acting frail and helpless will work every time! Boys love it, it's the best way to attract them!" snapped Sissi.

"We have a new student in the class," said the teacher. "I'll let her introduce herself."

Everyone looked at Aelita.

"I, err, I… um…"

"Aelita's her name," said Odd as he stood up from his seat next to her. "She's my cousin. She's very shy." He sat back down.

"Well, Aelita, let me welcome you to Kadic. We all hope you'll enjoy your time here."

Later

"See, everything's cool," said Jeremy as they sat on the bench. "There was no reason to worry."

"I guess nit," said Aelita. "I think I like history. You have to admit, you fight a lot. There are wars all the time."

"Everyone gets nerves on the first day of school," said Harry. "As for the fighting, well, let's just say that people have different opinions on things."

"Hey, guys! Well how's our new Earthling doing?" asked Yumi as she walked over.

"I'm fine," said Aelita. "I'm trying to adapt to so many new sensations. Like the air that you breathe, all the colours and the smells but I'm fine."

"It's about time we deactivated the Supercomputer, don't you think?" asked Jeremy as he stood up.

"Well I wouldn't wait for Xana to send us an invitation," said Ulrich.

"And who feels like going back to Lyoko now that Aelita's here with us?" asked Odd.

"Not me," said Harry. "The headaches Xana gives me are really annoying even if they're useful."

"You'll think this is silly but it scares me a little," said Aelita as she looked at Jeremy. "Lyoko, after all, was my home. And I don't know what effect shutting it down would have on me."

"It scares me as well," said Harry as everyone looked at Aelita. "I'm afraid that I might lose my powers, the ones from my avatar. I've got used to them."

"There's nothing to worry about," said Jeremy as he took her hand and pulled her up. "I'm sure about that. Come on."

Factory

Jim was snoring as the six slid down the wires. He had fallen asleep reading a magazine.

"Hi Jim! Well, did you have a good sleep?" asked Ulrich.

"Oh, great. I really appreciate everything you've done for me," said a startled Jim. "But I was getting a little bored."

"How'd you like to watch us deactivate Xana?" asked Odd as Jim walked over to them.

"Hm, ah, I wouldn't miss that for the world! You haven't forgotten your promise, have you Jeremy?"

"I haven't Jim. As soon as Xana's deactivated, I'll tell the principal the whole story."

"And get us in trouble," said Harry.

"That's great. I can't wait 'til all this is settled! I honestly never imagined that I would miss being your PE teacher so much! Uh, from now on, call me Jimbo, huh?"

"Thanks! So are you ready to go, Jimbo?" asked Jeremy. They headed to the very bottom of the shaft. "Here we are."

"Haven't been here for a while," said Harry as the supercomputer rose up from the hatch. "Not since you first showed the supercomputer to me Jeremy."

Aelita backed up slightly.

"Are you ok Aelita?" asked Jeremy as he out his hand on her shoulder. "If you want, we can wait."

"No, the sooner the better."

"Ok. I think you should have the honour," said Jeremy.

"No. I'd rather you did it." Everyone looked at her as they approached the computer. Harry stayed in the elevator.

"Sure Aelita." Jeremy walked over to the lever that would deactivate the computer.

Aelita started to sweat. Harry kept his eyes on her.

"Xana! You gave us a lot of grief, but thanks to you we met Aelita…so goodbye and good riddance!" said Jeremy as he pulled the lever down. The computer deactivated. Aelita clutched her head and collapsed. Harry caught her as she fell.

"Well, I guess that answers the question of wherever or not you keep your powers Harry," said Jeremy. Harry glared at him.

"TURN THE COMPUTER ON JEREMY!" he yelled. Jeremy gulped and turned the computer on again and ran over.

"What's wrong with her?" asked Jeremy worriedly as Harry picked her up.

"I don't know. I just hope Xana doesn't rear his ugly head," said Odd.

Lyoko

A tower in the ice sector glowed red.

That night

Jim took her pulse as Jeremy stood next to him.

"Her pulse is back to normal again."

Aelita started to stir. "I don't know what happened."

"You fainted Aelita," said Jeremy. "Harry's in the lab, checking what happened when you were materialised."

"Fainted?"

"It's like sleep. A really deep sleep," explained Jeremy.

"I like sleeping."

"Maybe you do but you passed out and that's not normal," said Jim.

"We modified the scanners program while you slept," said Jeremy. "Go you mind if we examine you?"

"No." Aelita smiled.

Lab

"Launching program," said Jeremy as he hit the enter button. Aelita spun in the scanner while the computer recovered the data.

"Whoa," said Jim. "Don't tell me you understand that."

"It's not very complicated," said Jeremy.

"It's like child's play," said Harry. "You should see the materialisation program. That's harder."

"We're ready to begin the analysis. That's fine Aelita. You can come back now. Let's see what the trouble is. Harry, what did you find?"

"When Aelita was materialised, Xana did something. I think it might have linked Aelita to the computer."

The computer came back with the results.

"That was just what I was afraid of," said Jeremy.

"It looks like Xana infected me with a virus!" exclaimed Aelita.

"How did he do that?" asked Harry with a frown.

"He must have done it during the transfer," said Jeremy. "There was a drop in the voltage for a very short time."

"I remember that," said Aelita. "At that moment, I felt Xana's presence for a few moments, like he was trying to hold me back."

"And that's probably the reason why you fainted a while ago. Xana implanted a virus because he wanted you to be linked to him like Harry said and if we kill Xana, we kill you. I wouldn't be surprised if he did it to Harry too. We need to check," said Jeremy. Harry nodded and went to the scanners. Jeremy launched the program and looked at the results as Harry came back up.

"Well?" asked Harry as he looked at the computer.

"This is a mess," said Jeremy. "I can't make heads or tails of it."

"Let me have a look." Harry replaced Jeremy in the chair. "Well, there are the programs that make up my avatar… I don't recognise this program… it's the one that allows me to detect Xana. I guess it developed on its own. There's the program that links me to the annex program… and that's it. Nothing else."

"Phew. At least only one of us is at risk if the supercomputer is shut down. Sorry for implying anything," said Jeremy. "I don't think I could handle it if both of you were affected."

"Oh, by the way, Xana's at it again," said Harry.

"Is there anything we can do?" asked Jim uncomfortably.

"What about? The virus or the tower?" asked Harry.

"Both."

"Well, we can develop an antivirus but that would take a while," said Harry. "As for the tower, we'll have to go deactivate it. I'm starting up an analysis program. The computer will work on it till tomorrow."

"I'll take Aelita back to Yumi's," said Jeremy. "It's kinda late."

"I'll go to the dorm," said Harry. "Work on the vehicles."

Outside

"What a strange sensation," said Aelita as she shivered.

"You're shivering, that's all," said Jeremy. "It's a reaction you get to the cold."

"I like the feeling of being chilly. The smells are all different at night."

"Yea, it's quiet and peaceful. The plants breathe differently." Jeremy picked a flower and gave it to Aelita. She smelt it.

"Wow, it's wonderful to be alive! And it's thanks to you that I'm here!" said Aelita.

"Well I uh, I didn't uh…do it alone…" said an embarrassed Jeremy. Aelita dragged him down the street.

"What's that? A scanner?" asked Aelita as she pointed at a photo booth.

"No, not exactly. Follow me!"

They took some pictures and laughed.

"Well, your castle awaits you, Princess!" said Jeremy as they stood outside Yumi's house.

"Thanks for walking me back. In spite of the virus, I still had the most wonderful night of my life. Goodnight," said a smiling Aelita as she kissed Jeremy on the cheek. "See you tomorrow!"

"Aelita's…WOW!"

The next day

"Do you have any idea on how to get rid of this virus?" asked Ulrich.

"No. not yet," said Jeremy. "I hope the calculations the computer made will help me."

"Here come the girls," said Odd as he watched them.

"How was your first night on Earth?" asked Ulrich as the bell went.

"Sleeping is really wonderful!" said Aelita.

"She would've slept all day if I hadn't shaken her a little!" said Yumi

Aelita laughed.

"You're just like me, Aelita!" said Odd. "And you'll see, sleeping in class isn't too bad either!"

Factory

A scanner opened. Jim was sleeping when he heard a banging noise. "What's going on?!"

Class

"Who can give us the definition of a pair of prime numbers?" asked the teacher as he walked across the front of the room. "Sissi?"

"Well, uh, a pair of prime numbers is, uh…um…two numbers that are both the same!" said Sissi desperately. The class laughed.

"Thank you Sissi. Can one of you give us a less hare-brained answer? Aelita?"

"A pair of prime numbers occurs when their highest common denominator is one!" said Aelita.

"Very good. Although…" said the teacher.

"In a principal ring, it's equivalent to the fact that their direct sum is equal to one, but of course with a non-principal factorial ring, that is not the case. That is…according to the theory of Bézout, you see!" continued Aelita. Everyone looked at her. They heard a scream.

"Calm down," said the teacher as he opened the door and looked at the running student who was still screaming. They looked at where the student had come from and there was a Kankrelat.

"Just like my dream," said Harry as they went back into the room and shut the door.

"Xana's changed tactics," said Jeremy as the class hid. "He sent one of his monsters to earth! How did he manage that?"

"Who cares?" asked Odd. "How do you suggest getting rid of it? None of us have any weapons!"

"That's not exactly true Odd and you know it," said Harry. "I have mine. You go to Lyoko. I'll stay here and defend the school."

"That's crazy Harry," said Aelita. "You know that."

"Aelita, I'm the best one to defend the school against monsters," said Harry as he concentrated and glowed. A few seconds later, he had changed. "Especially when they have to face Harry the ninja."

"Yumi? Yeah, we already know. Harry's staying here to defend the school," said Ulrich into his phone. "You want to stay? Meet Harry and me outside the maths class."

"Well, let's go guys."

They walked outside the room and looked at the wreckage. A Kankrelat turned into the corridor and Harry shot it. "Go!"

"A few more seconds and the coast will be clear," said Odd as he looked out the window.

Harry shot another one as Yumi hit the one behind him with a javelin before looking at Harry and gaping.

"What? Is there something on my face?" asked Harry.

"You are a ninja."

"I noticed."

"How did you do that without being virtualised?"

Harry grinned at her. "Magic."

Harry shot the Kankrelats coming down the corridor before leaving, dragging Yumi and Ulrich with him.

Factory

"Wow, Jim gave them a good run for their money!" said Odd as they looked at the wreckage of the fight.

"Jim? Jim?!"

Odd picked up a nail gun.

Kadic

"Looks like they've got their sights set on us," said Harry as Yumi threw another javelin and he used laser arrows.

"What gave that away?" asked Yumi.

Scanner

"Yaaah! You miserable little monster! I'll make you think twice before you leave your world again!" yelled Jim as he hit another Kankrelat.

"Hang on, Jim!" said Odd as he ran to the monster and shot at it.

"I told you to call me Jimbo, remember!" said Jim as he impaled it.

"Jeremy, you have to transfer me to Lyoko," said Aelita. "Harry's not here so I have to go."

"Have you forgotten Xana's virus, Aelita? What if Xana stops you from deactivating the tower? OR from returning to Earth."

"That's a risk we have to take," said Aelita s she out her hand on Jeremy's shoulder. "The priority is stopping Xana."

Odd and Jim looked at each other.

"You know as well as I do that we have no choice. Think of all the other monsters Xana could materialise," continued Aelita.

"Ok. Get into the scanner. I'll send you to Lyoko," said a sorrowful Jeremy.

Lab

"I'm deactivating the infected scanner," said Jeremy.

"There's an infected scanner?" asked Harry.

"Harry why are you on Lyoko?"

"I'm not Jeremy!"

"The supercomputer says you are."

"It might be because I'm using my avatar," said Harry after a few seconds. "That would explain why I can hear you too."

Odd shot another Kankrelat.

"Nice going kid," said Jim.

"I've located the activated tower. It's in the ice sector. That's where I'm sending you."

Odd climbed in the other scanner.

"Where's Harry, Ulrich and Yumi?" asked Jim.

"At school," said Odd. "Find the ninja. Take this." He threw the nail gun to Jim who caught it and ran off.

"Transfer Odd. Transfer Aelita. Scanner Odd. Scanner Aelita. Virtualisation."

Lyoko

"It's strange being virtualised!" said Aelita as she rubbed her back after landing on it.

"Yeah, but you get used to it!" said Odd. "This is going to be strange without Harry."

"No air to breathe, no smells, no warmth, nothing! I miss the real world already!" said Aelita as they stood up.

"Let's go Aelita."

They started to run.

Kadic

"Ulrich! We're never going to make it!" said Yumi as she defeated another monster.

"Yes we are," said Harry as he shot one with a laser arrow.

"Banzaiiii! Yaaaahahaha! Take that, you cockroach! Yeah, got one! Say your prayers!" yelled Jim as he destroyed monsters left and right.

"There's something I gotta admit, Jim! This is the first time I'm glad you caught us by surprise!" said Ulrich gratefully.

"My friends call me Jim-bo! Got it?" asked Jim. "Who's the ninja?"

"It's me Jim," said Harry.

"Oh. The other Stern."

"What's happening on Lyoko, Harry?" asked Ulrich. Harry cocked his head.

"Odd and Aelita are on Lyoko. They have monsters chasing them."

Lyoko

"Squadron approaching at nine O'clock," said Jeremy. "Three hornets."

Odd pushed Aelita out of the way. She formed an energy field and hit one.

"Nice shot Aelita."

"They're coming back," said Jeremy. They dodged again.

"Hard for the tower. I'll hold them off," said Odd as Aelita started to run. Odd got hit by a few lasers.

"Forty life points left Odd."

"Jeremy." Ulrich's phone number appeared on the screen.

"Ulrich, where are you? Odd needs your help."

"We haven't finished the job here yet," said Ulrich.

"Odd's only got forty life points left. If Aelita's left alone, we're headed for disaster."

"Don't forget that Aelita does have her energy fields Jeremy," said Harry.

"We'll hurry up," said Ulrich as the call ended.

Kadic

"You three better high tail it to Lyoko," said Jim. "I can handle the bugs on my own. Is it right of me to say that the sooner you deactivate the tower, the safer the world's going to be?"

They nodded.

"Well thn, what are you waiting for! Go on now and get the job done. It takes a lot more than a few ugly monsters to beat your friend Jimbo!"

"I'm staying here," said Harry. "Those four need the practice of going to towers without me. I don't think I can go to Lyoko anyway since I'm using my avatar. It needs a cool down period between uses."

Jim looked at him.

"Harry is really good at fighting Jim, even if he doesn't look it," said Ulrich as they ran off.

Lyoko

"Take that," yelled Odd as he hit another Hornet but he got shot.

"You're losing too many life points Odd! You've got to hang in there."

He got hit again. He shot again and hit the monster but it fired just as it was destroyed.

"Bye bye!" He devirtualised.

Aelita looked up at the tower. Another swarm of hornets appeared. Aelita ran into a cave, knelt down and used her creativity to create a wall of ice as Ulrich and Yumi appeared.

"Aelita's taking cover in a cave back there," said Jeremy as the hornets attacked the sheet of ice. Aelita ran further into the cave and started to slide on the ice.

"Heeya!" Yumi's fan broke Aelita's ice wall.

"You can do better than that!" said Ulrich.

"Sorry."

The two ran into the cave and followed Aelita. Yumi threw her fan and destroyed the hornets.

"There, that's more like it!" said Ulrich.

"It's all in the wrist. I'm a great Frisbee player!"

"That was close!" said Aelita.

"Come on Aelita, you know we would never let you go it alone!" pointed out Ulrich.

"Hey, we can't let the school go it alone either!" said Yumi.

"That's why Harry's there."

They continued down the passageway.

Kadic

"So, still haven't had enough huh?" asked Jim. Two Kankrelats walked towards two students but Harry shot them. "Hahaha… Hey you creeps, over here! I'm ready, come on!"

More turned up.

"How many are there?" wondered Harry. The tow students cowered against a tree.

"Well, don't just stand there, go!" ordered Jim. They ran off. "Leave those kids alone! You lot are pretty brave to go over to Lyoko knowing these things are there."

Lyoko

Aelita entered the tower. She walked to the centre and rose up. She pressed her hand to the screen.

Aelita

Code

Lyoko

Kadic

"Aelita's in the tower," said Harry as he took out another monster.

"Come on you bedbugs, gimme all you got! Go on, huh! Is that all you got?!" asked Jim as he got shot again. "What're you waiting for? Come on, you think I'm all washed up?"

"I'm not," said Harry. The monsters collapsed.

"Return to the past now!"

Harry sighed in relief as he saw the white light. "It's over."

The previous day

"Aelita! We're restarting the materialisation program immediately! We've gotta wipe out Xana before he launches another attack!" said Jeremy.

"Jeremy...it's impossible. The virus is still in me, I can feel it."

"She has a point," said Harry. "We're affected differently when the return to the past is activated to other people."

"We've still gotta try it! Maybe you can be treated here on Earth!" exclaimed Jeremy.

"No, Jeremy. You know that as well as I do. As long as this virus is inside of me you can't destroy Xana without destroying me at the same time!" said Aelita.

"We could materialise you for an hour or two…so you could pay us a little visit, huh?" asked Yumi, trying to comfort them.

"Why not? But the rest of the time I'll have to stay here on Lyoko to fight Xana…until the day you find the antivirus," said Aelita.

"Aelita…" said a crying Jeremy. Jim walked down the corridor.

"Jim! We forgot all about him," said Yumi.

"So, you kids are at it again," said Jim as he opened the door.

"No Jim, we were studying," said Odd.

"Studying my eye," said Jim. "I've has enough of your lies. You're going to stay right here until you tell me what you're up to."

"Jim? What is going on?" asked Delmas as he walked down the corridor.

"Ah, I'm glad you're here, sir!" said Jim to the principal. "I don't know what's going on, but these little devils are up to no good and I intend to find out what it is!"

"Yes, Jim, another one of your absurd stories about secret meetings and passages?" asked Demas. "I've had enough of your stories."

"He's right sir," said Ulrich. "We really were plotting."

"We were going to play a little joke on Nicholas and Herb," said Jeremy.

"If Jim hadn't caught us, we would have been late for school," said Yumi.

"Well, I'll look the other way this time since you admitted what you had done. Off to class children."

He walked off.

"Well you made up one heck of a story, kids! But why did you get me off the hook?" asked a confused Jim.

"Well it's just that…you never know, one day you might do the same for us," said Jeremy.

"And you know, we never get the time to thank you for all you've done for us. So thanks a lot, Jimbo!" said Ulrich.

"Yeah, thanks!"

"You're a hero! And a fantastic PE teacher, Jimbo!" said Yumi as she kissed his cheek and walked off.

"Some people are worth having around Jim and you're one of them," said Harry. "After all, who's going to keep us in line?"

"Oh, well, ahah…you ought to tell the principal that! Ok now, go to class!" said Jim as he hid his joy then he muttered to himself. "Huh, a hero? Wow…"

Jeremy looked at the picture of Aelita and him then they all put their arms around each other and walked out of the door and chuckled.