I don't own Harry Potter or Code Lyoko Evolution

Rendezvous

Krabes patrolled an active tower in the desert sector before looking in its direction and backing away. The same happened in the mountain sector with Kankrelats.

Kadic

Sparks travelled up a wire and affected the connected computer.

Harry's and Jeremy's dorm

Jeremy and Harry jolted up as an alarm rang. Jeremy picked up his phone.

"Aelita? There's an activated tower on Lyoko. Xana's attacking!"

Ulrich's and Odd's Dorm

Ulrich sleepily picked up his phone.

"Ulrich? You've got to come right now. There's an activated tower on Lyoko. Xana's attacking."

"Ok, we're coming." Ulrich walked over to Odd. "Come one. Wake up dormouse. We have an emergency."

He shook Odd awake.

"Another minute please!" moaned Odd in protest.

Harry's and Jeremy's dorm

"Yumi, come to the factory, ok? And tell William. But be careful. There's probably a spectre about." Jeremy ended the call. "Aelita, Yumi, Odd, Ulrich, William…."

"I got Sissi and Luna," added Harry as he watched Jeremy.

"Good. Let's go."

Yumi

"Ok, the way is clear."

"Shh, we're going to get spotted," warned William as they walked along the path.

"By who? And at this time of night?"

"I'm talking about a spectre, not a…. Watch out!" William grabbed Yumi as he spotted Jim. They started to laugh as they saw what he was doing. "I can't believe it. Jim's doing Tai Chi."

"Tai Chi is not the spectres' thing," said Yumi. They slipped quietly past him.

Aelita

Aelita collected a few things as her computer beeped.

"What's this?" She opened the message and read it out loud. "Confidential. If you want to find out more about your parents, let's meet in the chapel now."

Factory

Harry watched the display with a frown.

"This Xana attack is very unusual," said Jeremy.

"You said it Einstein," said Odd. "Attacking at such a time is not human."

"It's not using one but two towers. They seem to alternate with each other. Probably to stop you to deactivate it. Xana isn't stupid."

"It's going according to a mathematical model," said Harry as he glanced at Jeremy. "There should be a small window where both towers are activated. We just have to work out when."

"I can find moments when they're active at the same time. But it doesn't last long," said Jeremy.

"Looks like speed is needed," said Harry as he cracked his knuckles. "And we all know who's the fastest."

"Don't blow your own horn." Sissi smacked him on the head. Harry ducked and grinned at her.

"You don't have a chance in hell of you hitting me if I don't want you to."

"You mean they can only be deactivated at one moment?" asked William.

"Exactly. I can see only one solution. Split up the team."

"Where's Aelita?" asked Luna as she noticed that the girl hadn't arrived yet.

"Three in one sector and four in the other, right?" asked Ulrich, ignoring Luna.

"I'm going to find Aelita," decided Luna. "She might have bumped into the spectre."

"I'll help you," offered Sissi.

"I suggest you get going," said Jeremy as the two left.

"So, who's going with who?" asked Harry. Jeremy pulled out his phone.

"Jeremy?"

"Where are you?"

"No, don't worry, I'm coming," reassured Aelita as she stared at her screen.

"Hurry up, ok? Xana is doing a kinda weird attack. I fear there are several spectres around."

"I'll be careful, promise."

Aelita

Aelita looked at the message again before glancing up at the clock.

"That's it," she muttered as a new message arrived. "Lilly and Lys, my dad's favourite flowers."

There was a knock on her door and Laura pushed the door open. "Hi, I heard your phone go. Is there anything going on?"

"Yes, there's an alert going on," replied Aelita.

"And why didn't anyone tell me about it?" Laura was a bit annoyed at the revelation of Xana attacking and her not being aware of it.

"Take it easy Laura. Did you see the time? Jeremy almost certainly forgot."

"Can I come with you to the lab?" Laura turned from annoyed to eager.

"Go first. I've got something to finish," said Aelita as she turned back to the laptop.

"Ok, see you there." She closed the door.

Scanners

Ulrich and Yumi stepped into the scanners.

"I hope you two lovebirds can manage to keep on track and not start to make out," said Harry with a grin. Yumi and Ulrich glared at him and he held his hands out to pacify them. "I was just saying. It's a possibility."

"Hey, and what about me? Do I stink?" asked Odd. "Why don't you want to go with me?"

"Oh, shut up Odd."

The scanners closed.

"Looks like you're stuck with me," said Odd as he turned to William and Harry.

"Just don't try to kill each other," advised Harry.

Lyoko

Ulrich and Yumi appeared in the desert.

"Here are the Overwing and Overbike."

The two vehicles appeared and Yumi hopped on.

"Ulrich, are you alright? Did you hear something?"

"Yeah. Silence. It makes you feel so, well…."

"Don't you think you're a bit harsh with Odd?" asked Yumi. "He looks so stressed."

"I'd rather say that he's so annoying! Come on, let's go. I feel Zen enough now."

"Your tower is north, north east," said Jeremy as Ulrich climbed on board the Overbike.

"Ok, let's go!"

"I'll take care of Odd, William and Harry now," continued Jeremy as they headed in the right direction. "And send them to the other tower."

Mountains

"Just a minute. I need to upgrade the Overboard."

The three landed.

"Ok, we'll start walking then," said William. Harry shrugged and followed him as he considered options.

"Tell me, did you ever think about what would happen if we lost all our codes?" asked Odd as he trailed behind.

"Just forget about your little worries and problems when you're here, ok?" William snapped. "And I need an efficient teammate, not a chatterbox."

"Ok, what's wrong William?" asked Harry. "This isn't like you. You're not normally this on edge."

"Me, a chatterbox?"

"In case you hadn't noticed, thus mission isn't going to be a piece of cake! You've got to be good for once!" William poked Odd in the chest. "Is that too much to ask?"

"For once? What do you mean? I rock every time!"

"That's enough, the both of you. I don't think arguing is going to help us," said Harry sharply as he looked round the empty landscape. "This place is too quiet. I wouldn't be surprised if we're being watched and that every monster that is in this sector could hear your voices."

He shook his head.

Aelita

She walked along the path and paused as she looked at Jim who was still doing Tai Chi. Aelita tried to slip past him but stood on a twig. Pausing, she watched Jim stop before starting again and moving on. Speeding up, she headed towards the chapel.

Mountains

"Odd, here's your Overboard. It's been upgraded and is ready for action."

The board appeared and Odd jumped onto it.

"Maybe I should teach you how to use it."

"What?" asked William as he turned around.

"Give it a thought. When I lose all my codes, I might be so weak, I won't be able to go to Lyoko anymore."

"So what?" asked William.

"In that case, somebody could use my Overboard. Wait, not just the Overboard! All the rest too! I could give my console to Ulrich and my dirty clothes to Yumi. She'll know what to do with it."

William remained silent.

"I seriously doubt that would happen," said Harry as he sighed. "You most likely won't be able to deactivate towers anymore, that's all."

"And for Aelita…"

William jumped over Odd and stabbed one of the two Bloks before deflecting a shot from the other which knocked it off the edge.

"In life, there are those who act and those who talk."

"What are you doing guys?" asked Jeremy. "May I remind you that the tower is straight to the south?"

Harry and William turned to smoke and Odd followed on the Overboard.

"Hey William, wait for me! You've got to explain how you did that! Two Bloks at once!"

Lab

"Hey Jeremy."

Jeremy turned around in surprise at the new voice. "Laura? But who asked you…"

"Aelita. Looks like you forgot to call me."

"I didn't put you on my emergency list yet, sorry. But what's Aelita doing? Why isn't she with you?"

"Don't know." Laura shrugged. "She seemed strange though. She told me that she had something to finish."

Aelita

Aelita walked into the chapel. "Anybody here?"

No anser.

"Hey, anybody here?"

"Here Aelita."

The pink haired girl looked towards the source of the voice.

"Who are you?"

Lab

"You left her alone?" Jeremy clenched his fists.

"Calm down Jeremy. I came here to help, not to get told off."

"Sorry but you know the others are on Lyoko. Well, except for Sissi and Luna who went to find her. If a spectre finds her, how will she defend herself?"

"Bring Ulrich back and get him to find her," said Laura with a shrug. "Or Harry."

"Not possible. Xana's attacking strangely and I need everyone to help. I'm stuck here. Unless…. You could take the driver's seat."

"I am not listening to her," protested Harry. "No offence Laura but you haven't proved yourself yet. Until you do, I won't listen."

"Harry…" Jeremy trailed off and sighed. "I need to know if Aelita's alright. So, could you take my place?"

"Thanks Jeremy. You won't regret it." She sat down. "I don't believe it. I'm in charge of a quantum computer!"

Luna

"Isn't there any way to can find her using magic?" asked Sissi.

"Not that I would be able to use in time." Luna fiddled with her cork necklace. "But I think someone has been here recently. Look at the footprints. They're fresh."

She pointed at a unmarked piece of ground.

"I don't see anything," said Sissi in confusion.

"Well, I suppose everyone sees what they wish to see."

Desert

The two stopped as they reached the tower.

"I hope it's not crowed with monsters over there," said Yumi as she peered down. "We'd better not take too long."

"Look," said Ulrich as he pointed at the tower. "The tower keeps activating and deactivating."

"So, how do you think we do it?" asked Yumi. "How do we know when the towers are both activated at the same time? What do you think Jeremy?"

"I think I have no idea."

"Eh? Laura? But what are you doing here? Where's Jeremy?" asked Ulrich.

"I replaced him at a moment's notice. He was worried about Aelita and went to find her," explained Laura.

"I am really surprised he let you take his place," commented Ulrich.

"He did it though. So, if I get it correctly, I have to help you deactivate these damn blinking towers. Right?"

"Right," agreed Ulrich.

"Ulrich!" Yumi nudged him and pointed at the Krabes.

"The first thing to do is to synchronise with the others," continued Laura.

"Be ready." The two drew their weapons.

Mountains

"Odd, Harry, William? Can you hear me?"

The three looked at the tower.

"Yes Laura. Actually, we've been hearing you from the beginning," said William as he rolled his eyes.

"I find it so strange to be hearing her voice instead of Jeremy's," commented Odd.

"I don't like it," said Harry as he crossed his arms and pouted.

"So tell me, amateurish guys, is it still blinking for you?"

"Hey, I'm not an amateur!" protested Odd.

"Neither am I," added Harry.

"Yes, it's blinking," said William. "And quite strangely too."

"If only I could see both of them at once," muttered Harry. "I could tell when they're both activated."

"Can't you do that?" asked Odd. "Send out the clones!"

Harry's clones appeared and faded into a shadow.

"I'd be surprised If Laura could solve such a difficult problem," said Odd. "She's really not as good as Jeremy."

"Let's go there and we'll find out," said William as he turned to smoke.

"I changed my mind. Yumi will have my Overboard and you'll get my dirty clothes."

Harry shook his head as he copied William.

Kadic

"Aelita?" Jeremy pushed the door open and peered at the empty room. He walked over to her laptop. "Sorry but this is an emergency."

He began to type. "Password… Bingo."

He accessed her account and read the message.

"Let's meet in the chapel. Oh no Aelita!"

Aelita

"You were so cheerful when you were a kid. You always had your doll with you. Can you remember?" said the woman.

Sissi and Luna peered around the corner.

"Oh no. This is bad," whispered Luna.

"You can say that again."

"Oh no. This is bad."

"I didn't mean it literally!"

"You loved the smell of flowers. You were so sad in winter when they were gone." She mved out of sight.

Jeremy

The boy paused when he saw Jim. He quickly walked past but trod on the twig.

"What is it?" asked Jim. Jeremy quickly walked away and pulled out his phone.

"Laura? Xana set a trap for Aelita. You've got to deactivate the towers quickly."

"Ok."

Desert

"I just heard from Jeremy on the phone. Aelita is in danger. She's Xana's target."

"We've got to take action. But what's your idea for the tower?" asked Ulrich. The Krabes he was fighting imploded as Harry's clone showed up. "Harry? What are you doing here?"

"Harry? Who said I was Harry?"

"Oh, you're just a clone," said Yumi. "But why are you here?"

"The boss wanted me to observe the tower," said the clone with a shrug.

"I have a plan but I need to run some checks. Give me a minute."

"We might not have a minute," pointed out Yumi.

"The girl has a point," said the clone as Yumi looked at the tower.

"It's changing too fast. I don't see when we can enter."

"Come on. We've got to try," said Ulrich as they turned towards it. A third Krabe appeared and skewered the Overwing as it approached. Another two appeared from a different direction.

"Well, this is fun," said the clone.

"Xana is an artificial intelligence," muttered Laura. "Artificial intelligence are logical. There must be a pattern. Some kind of repetitive sequence with the on and off states of the towers."

Aelita

"And your smile when you were sleeping in the grass. It was so sweet."

Aelita climbed the stairs. Sissi and Luna followed.

"Spectre?" whispered Sissi.

"Most likely."

"Aelita!" Sissi called out to her. "Be careful. We don't know if she's the spectre or not."

"I remember your hair was moved by the wind. I caressed them with my fingertips. I was so afraid to wake you up."

"Aelita!" Sissi grabbed her arm but she wiggled out of her grip. The woman turned to face them.

"It can't be. Mum?"

Aelita ran over.

Mountains

The three arrived at the tower.

"Hey guys, there's a pattern."

"Yeah, noticed that," said Harry dryly. "It's the prime numbers up to eleven."

"I don't get it. What's the plan in an understandable language?" asked Odd.

"I just need to find the pattern first."

"I won't just stand here waiting for Xana to turn Aelita into a vegetable," protested Odd. "Here I go!"

Odd ran towards the tower only to bang into it. The Kankrelats started to fire at them only for Harry to destroy them.

"When I told you to act instead of talking, I didn't mean rush in blindly!" said an annoyed William as he pulled Odd up. More shots missed them and they ran into the maze.

"You're never satisfied!"

"I am! Your Overboard for example. It's not that bad after all."

"You're kidding me. I know you'll never use it." Odd watched two Kankrelats bump into each other. "And it's too late. I changed my mind, I'll keep it."

"It's a pity."

Harry stabbed another Kankrelat.

"Ah man. Harry's stealing all the glory," moaned Odd.

"Well, it's not my fault he's overly powerful," said William with a shrug. "I think he tries to hold back."

Odd ducked as a monster fired at him and destroyed it.

"Right on the mark!"

Aelita

Jeremy ran into the chapel to see Sissi and Luna trying to pull Aelita away from the spectre. It was obvious that Sissi was feeling the side effects. He ran over to them.

"It's a spectre Aelita! A spectre!"

Aelita ignored him. Jeremy dragged Aelita away.

"Why didn't we try that?" asked Luna. Sissi shrugged and stumbled, dizzy.

"Stop! What are you doing!" yelled Aelita.

"You flung yourself at a spectre Aelita!"

Desert

Ulrich deflected the shots as he jumped up onto a different Krabe.

"Watch out Yumi!"

A Krabe knocked her over as the one Ulrich was on top of knocked him off. A shot knocked Ulrich off the edge and he landed on a ledge.

"Laura! We're under attack," said Yumi as she hid behind a rock.

"Two… Three… Five…. Seven… Eleven… That's it! I figured out the pattern! Xana us using the prime numbers."

"We know that!" yelled Ulrich as Harry's clone stabbed the two Krabes and helped him up. "Harry worked it out ages ago!"

"Xana activates one tower then the other then waits a second then does the same thing only with an extra activation. Here comes the interesting part. After eleven switches, he restarts the whole sequence and keeps both towers activated for a few seconds. It gives you enough time to sneak in."

"Noticed that too," said Harry. "The window is thirteen seconds long. Just have a hard time with the monsters Xana keeps spawning!"

Aelita

"And I saw Xana's eye in her eyes. What, do you need more?" asked Jeremy.

"You're lying. It's my mother. I'm sure of it. If she was a spectre, why didn't she chase me when you dragged me outside? And when she touched me, I should have felt something, a side effect as usual. I didn't feel anything."

"How about the fact I feel dizzy and it only started after I touched her?" asked Sissi.

"Things aren't always as they appear," said Luna. "And as to why she didn't chase us, well, Xana knows that if we took you away, you'd come back. It's easier to trap a willing prey. And the side effects may not always be apparent."

"I don't know what to tell you," said Jeremy. "The spectre is different from the others."

"Or you're speaking nonsense. You want to prevent me from seeing her again. If our friendship matters to you, you'll let me go back to her."

"Then we'll just have to drag you away again," said Sissi with a shrug.

Aelita ran.

"Hey, wait!" They ran after her.

Lyoko

"Five… Seven… Eleven… go!"

Everyone made their way to their respective towers. Yumi rode the Overbike into the tower as William threw Odd into theirs.

"Now, I'll take care of you!"

"Team up?" asked Harry. William nodded and they charged.

Odd and Yumi walked to the centre of the platform and rose to the second one. They pressed their hands to it.

Code

Lyoko

Chapel

"My darling. Where have you been?" asked the spectre. "Come."

Aelita ran over to her. Sissi quickly caught up, even if she as dizzy. She grabbed the spectre and tried to pull Aelita away from it.

"Let me go!"

Jeremy ran in. "Aelita!"

The spectre sent a pulse of electricity at him but he had moved before it had chance to hit him. The spectre exploded. Jeremy grinned.

"Mum?" Aelita sat down on the floor. Jeremy tried to hug her but she threw the arm off. "It's all your fault. I hate you."

"It wasn't your mother Aelita. It was a spectre. Xana is a fearsome opponent. He sets traps for us. He uses our most secret pains for that. But you're not alone. You can count on me. And the others. And you know what? Xana is just a program. He can make mistakes. We're going to beat him for god. I promise you."

Aelita smiled as Sissi and Luna watched.

Lab

Aelita and Sissi attached their watches to the computer.

"You lost a lot of codes. Both of you."

"I'm nearly empty," said Sissi with a frown. "But the spectre was touching Aelita for longer."

"It's entirely possible that Xana implanted different amount of source codes into us," said Harry. "So some people could have less than others."

"And Xana now has eighty per cent of his power back," said Jeremy. "That's bad. Very bad. Another twenty and he'll take control of the entire network."

"Then he'll come for me," added Harry.

"I sucked. I was so stupid," muttered Aelita.

"It's not your fault. You thought it was your mother," said Odd as he reassured her.

"It could have happened to any one of us," added Yumi. "Except Harry. He would know off the bat."

"Don't worry," said Ulrich. "We're all with you."

"I'm sorry. I've been so nasty to you," said Aelita to Jeremy.

"Don't worry." Laura left, annoyed at being ignored.

Sewers

"Laura!" The girl stopped as Aelita called out to her. "Thank you."

The girl smiled slightly before leaving.