I don't own Harry Potter or Code Lyoko

Final mix

"Hm…I can't remember the equation…square root of a quotient equals…uh…" muttered Ulrich as he picked up his drink.

"Uh, zero? Uh, no…ten? No, wait…I give up! Hey, wait, where are you going?" asked Odd as Ulrich moved away.

"To study for the science final! It's tomorrow, and I can't exactly count on you to help me!" said Ulrich as he glanced back. Odd selected a drink.

"You must be kidding! We'll miss the afternoon snack! And don't get all worked up about that exam, I've got a little something in mind!" said Odd.

"Hmph! This little something, does it start with "cheat" and end in "sheet," by any chance?" asked Ulrich.

"Wow, you just read my mind!" said Odd. "Are you turning into Harry?"

"Oh, forget about your dumb plan."

"Gee, thanks a lot Ulrich for being so supportive!" muttered Odd.

"Wow, I'm really excited," said Sissi. "Guess why!"

"Don't tell me, the members of the band Love Potion split up?" asked Odd.

"Come on, that's old news, you dork! Brian fell in love with Crystal Pearl and so Geoffrey kicked them out!" said Sissi. "Now listen to this. The news is… My father said it was ok to use the gymnasium!"

"He said yes?! Yes!" exclaimed Odd, punching the air. "I've got to find William."

"It's going to be the dance party of the century," said Sissi as she spun around.

Gym

"Hurry it up," said Jim as students moved the equipment. "You two, take those mats to the storage room!"

William dropped the item he was carrying on the floor. "Oh no. I don't believe this."

"So it's really true, huh? The principal gave the techno party the green light?" asked Odd as he walked over.

"Looks like it, yeah…"

"Wow! The best DJs from the local schools will be there! It's going to be a blast!"

"We're not blasting anything," said William. "The mixing board is broken."

"Hey, no problem! We'll ask Jeremy, he's Mister Fix-it! He can fix anything!" said Odd as he thumped William on the back.

"You think so?" asked William.

"Yeah!"

Harry's and Jeremy's dorm

"No! I've got better things to do than play around with a mixing board," said Jeremy.

"Maybe I can help," offered Aelita.

"Would you?" asked Odd. "We could get Harry to make sure that everything is ready…"

"But what about the research on your antivirus?" asked Jeremy.

"I'm just sitting around watching you at this point," said Aelita.

"Great, come on."

"What about the science final?" asked Jeremy as they walked out the room. "Don't you ever study?"

"It's in the bag."

Gym

Aelita tightened the screws on the mixing board. "So then, this is the thing that makes the music?"

"Yep," said Odd. "This plays the records on the turning tables. The trick is to synchronise the sound. Hey Harry."

"How's it going?" asked Harry. "Aelita, can I talk to you in a bit?"

"This is interesting," said Aelita. "Of course I can talk to you Harry."

"It sounds like you don't know a lot about it," said William. "Will it take much longer?"

"It's done," said Aelita.

"Ming if I give it a try?" asked William. He put a record on it and started to play. "It's working! Aelita! Fantastic! You want to give it a try?" He handed the headphones to Aelita.

"Yeah. Why not?" she started to mix the music.

"Wow! I've never managed to get that kind of mix!" said William.

Jim turned the power off. "Well then goof off. Don't mind me. Do you know what time it is?"

"Uh, we're sorry Jim," said Odd as he walked down the stairs. "We were rehearsing for tomorrow night. You like electro?"

"Forget it. Electronic. I prefer the twist."

"Aelita, you really mix like a pro! Where'd you learn?" asked William as the four walked out.

"Uh…um…"

"Uh, it runs in the family! We're all artists, we're creative!" said Odd quickly.

"I'll make a selection and you'll be our DJ," said William. "Harry can be…"

"Out of here!"

"You think so?" asked Aelita as William handed her a record. "Well, ok."

Harry's and Jeremy's dorm

"You're wasting your time with this party!" said Jeremy.

"I am not wasting my time! I'm trying to live, like you guys! And have some fun, a good time, that's human too, isn't it?" asked Aelita with her arms crossed.

"Stop being a downer Jeremy. Aelita is free to do what she wants," said Harry.

"You mean you don't have a good time researching the antivirus with me?" asked Jeremy.

"Hmph! You're as stubborn as a fool!" yelled Aelita as she slammed the door.

"It's stubborn as a mule!" muttered Jeremy as Harry lay down on his bed.

"You don't need to be as harsh on her, you know Jeremy."

Next Day

"Odd, you didn't study at all?!" asked Ulrich.

"Nope! But like I told Jeremy, it's in the bag! Huh? What's going on? Can't we go in?" asked Odd as they looked at the queue.

"Inspection by GI Jim!" said Sissi as Jim threw a student's bag into a pile in the corridor.

"One pen, that's all you can take in!" said Jim.

"Ouch! That's an unexpected development!" said a suddenly nervous Odd.

"You have two hours for physics and then two hours for chemistry," said Ms Hertz as she handed out the papers. "My colleagues and I will correct the papers this afternoon. After that, the principal will announce the results. You may begin."

Everyone started to write. Odd started to fold his paper. Four hours passed.

"The test is over," said Jim as he started to collect the papers. "Put your pens down and stay where you are while I collect them. Stay in your seats until I have all of them."

He walked past Odd and looked at his origami. "Well done, Odd! That's one of your best yet!"

Lockers

"Ms Hertz… Ms Hertz… I hope she'll let me keep Odd's paper swan for my collection!" said Jim as smoke came out of a switch and made its way over to him. It went into him and Jim opened his eyes to reveal the eye of Xana.

Lyoko

A tower in the desert glowed red as a Megatank patrolled.

Kadic

"Well?" asked Yumi as she walked over to them.

"Sure, never felt better!" said Odd.

"I was talking about your exam, stupid!" exclaimed Yumi.

"It looks like I'm going to be held back this year."

"Don't exaggerate," said Yumi. "It wouldn't have killed you to have studied though."

"Harry didn't study," Pointed out Odd.

"Well, his memory is a lot better than most peoples. Also, he learns the stuff when you do it in lesson. He doesn't go to sleep when you do."

Odd pouted.

"Cut it out," said Ulrich. "This isn't the time."

"Hey, we're going to see Aelita the DJ! That's bound to cheer us up! Where is she, by the way?" asked Odd, cheering up. "And Harry?"

"She's already in the gym. The DJs get VIP treatment!" said Ulrich. "Harry's around."

"What about Jeremy?" asked Yumi.

"He's sulking!" said Odd.

Corridor

Jeremy was walking up the corridor when he overheard Sissi and the Principal. He paused outside the room.

"You're not going to the party. That is that," said Delmas.

"Please Daddy. It's the happening of the century!" whined Sissi.

"You should have thought of that earlier and studied for the exam." He pointed at the picture Sissi had drawn. Jeremy moved on and Jim followed him. Jeremy launched the super scan as soon as he entered the room.

"Xana! He sure picks his moments!" muttered Jeremy. "Desert Sector. Ok." He pulled out his phone but Jim intervened.

Backstage

Tamiya filmed Aelita with her camera.

"Aelita? A question for the school paper! As a DJ, how would you define your style? Hardcore, Deep-House or downright New Beat?" asked Milly.

"Um…" said a completely baffled Aelita.

"She's a little too nervous to answer. I'd say her style is more hardcore, but it's more a style of her own!" explained William as he intervened.

"Totally rad!" said Tamiya.

"Tadaaa!" said Sissi as she walked over to her goons.

"You snuck out?" asked Nicholas.

"No, no, my father said "you're going to repeat the year, but it's no big deal, sweetie, it doesn't mean you can't have a good time!" exclaimed Sissi sarcastically.

"Is that what he said?!" asked Nicholas dumbly.

"Oh, you're such an idiot! Of course I snuck out, what do you think?!"

Harry's and Jeremy's dorm

Jeremy's phone rang. Jeremy was tied to his chair so couldn't answer it. The door opened and Harry walked in.

"Jeremy!" he ran over and untied him. "What happened? Xana?"

"Yes, Xana," said Jeremy. "We need to warn the others."

"I don't think they have their phones on them," said Harry. "Kiwi!"

The dog came running in.

"Go get Odd." The dog ran out again. "That's sorts it."

"You're relying on a dog that is as dumb as its owner?" asked Jeremy. Harry raised an eyebrow. "Stop looking like Spock."

Gym

"And now, Aelita! A brand-new DJ! And as you're going to see, she totally rips!" said the announcer on the microphone.

Aelita started to mix the music. The crowd started to cheer.

"Wow, it's great," said Yumi to Ulrich.

"Your cousin's incredible, Odd!" yelled William into Odd's ear. Sissi noticed Ulrich dancing with Yumi but brushed it off.

"What's up? Not dancing?" asked Odd when he noticed William standing and not doing anything.

"Uh…it's not my thing…"

"Oh, you gotta be kidding me. Come on, let me see how you move! …" said Odd as he saw William's pathetic dance. "Oh…you're right…it's not your thing…"

Kiwi arrived. "Raff! Raff! Raff!"

"Nice dog sounds! Where did Aelita sample that from?" asked Odd then he noticed Kiwi. "Hey, what are you doing here, buddy? Jim'll spot you! Ok, ok, ok, hold on. I'm coming!"

"Hey!" complained Yumi when Odd bumped into her as he followed Kiwi. "Where are you going?"

"Ask him!" said Odd as he pointed at Kiwi.

"I'll go with you! I could use some fresh air!" said Yumi. "Coming Ulrich?"

Ulrich nodded. They left as Jim came in and focused on Aelita. He passed some electricity down the cables and shocked Aelita. She fell down to gasps. Jim ran up and checked her.

"Everything's alright. She just fainted," said Jim in a deeper voice than normal. He picked her up. "I'll take her to the infirmary. Go on with your party."

He walked off and mumbled "Where she goes, he will surely follow."

Harry's and Jeremy's Dorm.

Kiwi lead the three to Harry's and Jeremy's dorm.

"Finally!" exclaimed Harry. "We've been waiting for ages!"

"What happened?" asked Yumi as she noticed the ropes.

"It was Jim! Xana's possessed him! Where's Aelita?" asked Jeremy.

"At the dance," replied Ulrich. "She's finishing her mix."

"With Jim around?" asked Jeremy disbelievingly. Harry shook his head.

"Well, how were they supposed to know Jeremy?"

Jeremy looked at him.

Somewhere at Kadic

"Are you sure that Jim can virtualise Aelita and send her to Lyoko?" asked Ulrich as they ran.

"Under Xana's control, he can do anything!" said Jeremy.

"Xana knows how to virtualise someone," agreed Harry. "He can easily use Jim to control the computer."

"Aelita doesn't stand a chance," said Yumi. "Not against the Scyphozoa."

"Or, as I like to call them, Fish Heads," said Harry.

"If we don't get there soon, we can say bye bye to Aelita's memory," said Odd as they stopped in the gym.

"She's not here," said Ulrich as they looked at the stage. "Harry can you track Aelita?"

"Not on earth," said Harry. "I can track things on Lyoko because of a quirk that didn't carry over to earth for whatever reason. I can however track Xana and because Xana is controlling him, Jim. I can tell that Jim is nearly at the factory."

"Let's go," said Ulrich.

Lab

Jim placed Aelita in the scanner. He went up to the computer

"At your orders, Xana! Transfer Aelita. Virtualisation!"

Lyoko

Aelita woke up in time to see the Megatank. It opened up and Aelita hit it with an Energy Field then ran off.

Factory

The five ran to the elevator to find Jim waiting for them.

"Jeremy, Yumi, Harry, take the corridor! Odd and I will take care of Jim!" said Ulrich.

"If you ask me it's more likely he's going to take care of us!" said Odd as Jim separated into two.

"And he's brought a friend along with him too! Go! Banzaiiiii!" yelled Odd as he used Ulrich as a trampoline and jumped over the two Jims. They didn't react. "This is bad…!"

"You think so?!" asked Ulrich as he got sent into a pillar and knocked unconscious.

"Ulrich!" Odd ran forward into one of Jim's arms and collapsed.

Lab

"Aelita, are you ok?" asked Jeremy as he sat down on the chair.

"For the moment," said Aelita. "I don't know how long it will last though."

"Help is on the way. Transfer Harry. Transfer Yumi. Scanner Harry. Scanner Yumi. Virtualisation."

Factory

The two Jims fused into one.

"Ulrich!" Odd shook Ulrich after he got back up.

"Huh?!" Ulrich muttered as he woke up.

"This is no time to take a nap! We've got an invincible guy to wipe out!" said Odd as he glanced at Jim.

"What are you suggesting?" asked Ulrich.

"The harpoon thing! Like the way we handled the Kankrelats!" said Odd as he picked up a metal rod. "Hey Jim! You didn't think a little tap like that would know me out, did you?"

Jim turned around after opening the elevator. He advanced but Ulrich knocked him down with the rod. "Hurry up!"

Odd ran into the elevator and they went down. Ulrich called Jeremy. "We're on our way."

"Get to the scanners now! Aelita needs you. Hang on Aelita."

"The Scyphozoa isn't here yet," said Aelita. "I don't know where it is."

Jim woke up.

"Transfer Odd. Transfer Ulrich. Scanner Odd. Scanner Ulrich. Virtualisation!"

Lyoko

"Aelita is coming up the crater," said Jeremy. "Head south south-east."

"Have you programmed the vehicles?" asked Yumi as Harry summoned the Overjet.

"Of course! I think of everything. So does Xana I guess, from the looks of it. You've got company!" said Jeremy as the icons appeared on the screen.

"Why did I even bother making a program that lets you summon your vehicles?" muttered Harry as the hornets appeared.

"Go faster," said Jeremy. "If a Scyphozoa gets to Aelita before you do, her memory will be drained."

"Thanks for stating the obvious," said Harry. "One of the Fish Heads will come after me too. I don't think Xana will give up on me now that he knows how to get to me."

"Go on ahead," said Odd. "Leave the hornets to me. And Harry, don't be such a downer."

The three drove or flew off.

"Come on," muttered Odd as he started to aim. He fired and hit one of the monsters. The other two shot at him, causing him to dodge and hide behind a rock. He took a few hits. The monsters flew over and Odd started to run again. He climbed up a rock and jumped.

"Laser arrow! …rats, I missed!"

He landed on a rock, slid down and got hit again.

"You're down to ten life points," said Jeremy as he glanced at Odd's ID card.

"They're heading to the crater," observed Odd as he watched them go.

"Careful, the hornets are right behind you," said Jeremy to the three others. "You're not too far now."

The hornets started to shoot at them. Harry did a loop and shot at them from above. Ulrich got knocked off the Overbike by a shot. The Overbike skidded a distance before stopping.

"Ulrich!"

Harry flew down next to him. "Go on Harry. You too Yumi."

The two flew off. Ulrich deflected a few shots but got hit again.

"Surpriiiiise!" called Odd as he tried to aim at the Hornets. "Whoa!" He was shot off the Overboard.

"Taxi?" asked Ulrich as he rode up next to him. Odd jumped on and they drove off.

Aelita glanced down the crater and saw a Scyphozoa.

"Jeremy, it's here."

It floated up to her.

"Not so fast, blubberface!" said Yumi as she jumped off the Overwing and Harry floated above her.

"Here's the other one!" he shouted as he saw it. Another Megatank appeared and devirtualised Yumi.

"Oh no you don't" Harry shot at it and destroyed it. "I am awesome!"

He floated down to Aelita's level. "Jump on!"

Aelita tried to jump in but the Scyphozoa grabbed her and started to take her memory. Harry jumped out, pulled out his sword and hacked off the tentacles. Aelita landed hard on the ground.

"Get in." Aelita ran to the second seat and Harry flew off. "I never did ask you about how you were dealing with Franz being your dad."

"I'm conflicted. He's the guy that created Xana but he's also my dad."

"At least we know you're human. You belong on earth."

Lab

Jim phased through the door and walked over to the terminal.

"Hey! What the- Jim! Ah…"

"Sorry, I'm taking over from here! Said Jim as he pushed Jeremy away and started to control the computer. He devirtualised the Overjet and Odd before starting to electrocute Jeremy. The doors opened to reveal Yumi.

"Jeremy…" She jumped on Jim. "Get back to the computer. I'll handle Jim."

Jim struggled for a while before throwing her off.

Lyoko

"What the!" muttered Harry as the Overjet started to disappear. He shot down to the ground just before it disappeared fully.

"Hold on right!" said Ulrich as he drove up a steep curve. They flipped over the hornets and Odd shot at them.

"Not bad, huh?"

"I…" was all Odd had time to say before he started to devirtualised. "Uh, hey!"

Ulrich got shot by a laser from a Krabe. He drove around in a circle before driving straight at the other two.

"What happened to the Overjet?" he asked. Harry shrugged.

"I don't know. Something happened and it wasn't my coding."

The Krabe shot at the Overbike and it disappeared. Harry glanced around and saw the second Scyphozoa. He backed away.

"What's wrong Harry?" asked Ulrich as he looked at where Harry was staring at. "Oh. I guess you have developed a fear of them."

"I have no desire to become possessed again." Harry shuddered. "It was nasty. Xana giving me orders and me wanting to carry them out."

"That doesn't sound so bad," said Ulrich. Harry glared at him.

"Try bring ordered to get rid of your friends and you not caring about them. Then there's the fact that I couldn't disobey him."

Ulrich shuddered. "I see your point. Why do you remember though?"

"Magic."

"That's your answer to everything isn't it?" asked Ulrich. Harry rolled his eyes.

All three of them started to back away. Harry brought up the status of the Overjet and reloaded it once he saw that he could. He and Aelita jumped in.

"What about me?" asked Ulrich.

"Hold on tight," suggested Harry as he settled in the pilot's seat.

Ulrich rolled his eyes, jumped on and clung to it for dear life.

"You might want to get off the wing. It's making it unbalanced so it will be hard to fly since I'll have to compensate for the additional weight at one side. I also didn't mean that literally."

Ulrich moved along and Harry flew off at top speed.

"Head to the tower. Twenty five degrees east. Move it!"

"You are insane!" yelled Ulrich over the wind.

Harry flew in the right direction and quickly landed at the tower. Aelita jumped off and ran into the tower. She went up to the screen and pressed her hand to the screen.

Aelita

Code

Lyoko

Lab

"Huh? W-what am I doing here?" asked Jim as his eyes returned to normal.

"You'll never know, Jim," said Jeremy. "Return to the past now!"

The white light engulfed everything.

The previous night

"Ok, so that's a promise, right? Jeremy, you're going to help me with physics, and Aelita, you're going to help me with chemistry. And you're going to help me until I get it, right?" asked Odd as they walked down the path. Odd had a book in his hands.

"Promise!" said Aelita and Jeremy.

"Wow, I am really knocked out! Bet you can't guess why!" said Sissi as she waltzed over to them.

"Your father said ok for the gymnasium?" asked Odd.

"Huh? How did you know that?" asked Sissi in return.

"Well, I've already lived through this day and I just travelled back through time!" grinned Odd, knowing that she would believe him. He wasn't disappointed.

"You're a real looney! I feel sorry for you!"

"By the way, you want to come and study with us?" asked Odd. "Jeremy and Aelita are going to give us a hand!"

"Study? Me?" asked Sissi incredulously. "Ha! Looks like you lost the only brain cell you had left!"

"If she only knew what was coming!" said Odd as she walked off.

"What a pain," said Aelita. "After the final exams, I want you to teach me everything about techno. I love it. It's my new passion. Will you come listen to me mix, Jeremy?"

"I promise!" said Jeremy.

"Just don't stay up all night," said Harry. "And don't continually do it. Leave time for other things."