I don't own Harry Potter, Code Lyoko or Star Trek 2009. If you can think of any Xana attacks or a better title, leave a review

New beginnings

Jim groaned as he was led to his dorm. This was the fifth school in two years. He'd get into a fight, be expelled them he'll be put in another school and the cycle would repeat.

"Now, this form used to belong to Jeremy Belpois when he was here," said Alan, the groundskeeper. "And his roommate, Harry Stern, went missing apparently. They say that it's haunted."

"Yeah, yeah" muttered Jim, uninterested, as he put his stuff on his bed. "I would like to unpack my stuff."

"Gotcha."

Whistling, Alan walked out the door as Jim opened the wardrobe.

"Hang on..." Jim ran his hand round a faint crack in the wood then lifted it up to reveal an envelope. He picked it up and opened it to reveal a letter and what looked like a switch.

To whoever finds this

My name is Jeremy Belpois. If you are reading this then you found the hidden compartment in my wardrobe that my friend Harry put in. The switch that is included in this is a key to a world of amazement and danger. If you choose to use it you will see things beyond belief.

Be careful as this cost me two dear friends.

Yours sincerely

Jeremy Belpois

Jim searched the envelope and found a rolled up map.

"To think I thought this school would be boring. Jeremy Belpois? That one guy whose programming forms the root of Starfleet's? Or was that his missing friend's that he submitted on his behalf?"

Frowning, Jim pondered the letter as he began to unpack.

Later

Jim finished unpacking them found the map and switch. He walked through the boiler room, into the sewers and out near an abandoned factory. Frowning, he flipped the map open and saw some more instructions. Following them, he walked into the factory and to the battered elevator. Pressing the button and inputting the password given, blast doors opened onto a terminal.

"Wow."

Jim looked around the massive room and at the terminal which seemed to be able to move. Pressing a few keys didn't do anything. Jim frowned then pulled out the switch. He tried inserting it into the slots but it didn't fit. He went back into the elevator and went down.

"This room is freezing!"

Shivering, Jim managed to find where the switch belonged and slotted it in. A computer, at least Jim thought it was a computer, rose out of a hatch. Jim ran to the elevator and went back to the terminal.

"Is this working now?"

Jim pressed a button and a hologram appeared, showing a sphere.

"Wow. This is awesome! A whole virtual world!"

"Is someone there? Who are you?"

Jim jumped at the unexpected voice. "Who's there?"

"Look at the screen."

Jim looked at the screen. It showed ID cards. Two had a person next to it and had a picture of a cartoon character. One looked like a ninja and the other was some kind of warrior.

"The characters? You're the computer."

Peals of laughter came from the computer. "No, we're not the computer. We're human."

"And I'm a Vulcan," said Jim sarcastically.

"No, we are human." A second voice. "I know it sound unbelievable but it's the truth."

"Say that I believe you. How did you get in there?"

"You saw the tubes?" First voice again. "That's how we got here. We were supposed to go back to earth but we got a bit delayed, our friends thought we were dead, we couldn't tell them otherwise and the supercomputer was shutting down. We had to hide in a tower to survive until the computer was turned on again."

"Do you have names?" asked Jim curiously. "I think you're telling the truth."

"I'm William and the little ninja is Harry." The second voice. No, William. "What's yours?"

"Jim Kirk."

"What's the date? And use the earth calendar, not any of the ones you use. We don't know how long we've been sleeping," explained William.

"It's October the 20th 2245," said Jim with a frown as he converted the stardate into the old earth calendar. "How long have you been in there?"

"Over two hundred years. Do you want to hear our story?" asked Harry.

"Sure. It's better than having around this boring place."

Several hours later

"So we ran into the tower as the computer shut down and we haven't woken up since," finished Harry.

"That's one unbelievable story." Jim frowned at the time. "Sorry, I have to go back to school. It's time for lunch."

"That's alright. You know where to find us. Just tell us if anything odd happens. And don't tell anyone about our existence. Things could turn nasty."

"Sure. And I'll help you come back to earth. I promise."

Jim ran back through the sewers and into the school. He ran into the lunch hall and grabbed a great.

"Hey, you the new kid?" asked a brown haired boy with green eyes. "I'm Dan Della Robbia."

"Jim Kirk."

Dan led him to a table. "Ok so you start tomorrow, right?"

"Yep. I have a feeling that this is going to be an interesting school."

Staring at him, Dan shook his head. "You are weird, you know that? This place is the same as any other school."

"Let's say I found something interesting and leave it at that."

"Can't you tell me?" whined Dan.

"Sorry, I promised not to tell."

"Big brother!"

Groaning, Dan turned to face the girl running towards them. She looked rather like Dan. "Danny, is this really the time? And we're the same age!"

"Aww, can't I say hello to the cute new guy?"

"This is my annoying twin sister, Danny," introduced Dan. "And this is Jim Kirk."

"Hello." Danny blushed and Jim groaned.

"Another girl with a crush. Everywhere I go, there's a girl with a crush."

"New kid!" A black haired boy with blue eyes sat down. "I'm Jack Dallas. Distantly related to Jeremy Belpois."

"I don't think he wants to be near you Jack," interrupted Dan. "You smell. It's because of all those sport clubs you're the captain of."

"Jim Kirk. Do you guys know each other?"

"Well duh. Me and Dan share a dorm," explained Jack with a small smile. "We have to put up with each other. And his sister is hot!"

"Jack!"

"Oh no, it's her," moaned Jack as a blonde girl ran over.

"And she is?" asked Jim.

"Molly, the principal's daughter. Everyone wants to go out with her but she only had eyes for me!"

"Seriously?" Jim frowned. "I know a brother of a friend that had a similar problem."

"Jack would you like to go on a walk with me?" asked Molly, breathless.

"NO. Now go away. I'm trying to make the new boy comfortable."

Molly huffed as sparks came out of a nearby socket. Jim looked at it curiously before dismissing it as nothing.

Lyoko

"What are you doing?" asked William as Harry moved windows around.

"Learning. We can't get back to our own time so we'll have to integrate. Some of this stuff is fascinating."

"Well, it's been some time since you've had to learn anything, hasn't it?" asked William with a small smile.

"Yep." Harry's shoulders quivered slightly. Frowning, William stared at the younger boy.

"What's up Harry? And don't try to lie to me. I know you too well."

"Our friends are dead. So is Sissi."

Sensing his friend's mood, William pulled Harry into a hug. "Stop thinking about it. What would they want you to do?"

"Live my life and don't spend it stuck in the past."

"Exactly." William poked Harry in the chest. "Sure they're dead but they do live in our memories. Tell me what happened to them. Please."

Closing the interface, Harry smiled as the two sat down.

"Oh, I'm not entirely sure that we can devirtualise properly so try not to do anything stupid."

"Me? Do something stupid? That's your brother you're talking about!"

"You sure about that?"

"Did I ever tell you how much I appreciate your sarcasm?"

"Nope."

"Well, now I'm telling you."

Later

Dan frowned as he watched Jim run across the ground as the bell went.

"Where are you going? You haven't been here that long..." Pulling his bag on, Dan followed Jim through the boiler room and the sewers. "The factory? What is so important here? Are you just curious?"

Crouching down, Dan watched Jim enter the elevator and press a button before gaping in shock as the elevator went down. "That thing doesn't work! Everyone has tried. Why now?"

Jumping down, Dan pressed the same button as Jim and waited for the doors to open before exclaiming in surprise as he saw the lab.

"That sucks," said Jim to someone. "I could try to find a way to bring you back. I have a few ideas but it will take a while."

"Jim? How did you find this?"

"Who's that?" Dan didn't recognise the voice.

"Dan, what are you doing here?" asked Jim.

"Oh, so that's Dan."

"Yes, I'm Dan and I love working with computers. What operating system does this run?" Dan ran over and started pressing keys.

"Not one you know of. Will you stop pressing keys?"

"You said that humans could travel between the two worlds," interrupted Jim. "Do you think that we could come?"

"If you really want to. I don't think there's any danger at the moment."

"We can go inside it?" asked Dan eagerly.

"Yep. I can tell you how to load the programs."

Jim quickly followed Harry's instructions.

"Now go down a level and enter a scanner each."

"Scanner?" asked Jim in confusion.

"You remember the tubes you saw? Those are the scanners."

Looking at each other, the two boys moved to the floor below and entered one each. a second later, the doors closed and a beam of bright light started moving over their bodies. Once the beams had covered them completely, there was a bright flash of light and then blackness.

Lyoko

"Wah! Ouch!" The two boys landed on their bottoms. Rubbing them, they stood up and looked around.

"Well, we're definitely not in the computer lab now," said Jim. Bending down, he touched the grass. "This feels so real."

"Nice going Sherlock."

"Hello boys!"

"Harry? That you?" asked Jim as he spun around.

"Yep. Up here Jim." The two boys looked up at the ninja crouching on a branch. "Nice avatar."

Jim yelped as he looked at himself. "I'm a cat. A humanoid cat. How? Did I just change species?"

"Uh, no. Just turned into a computer program. And you look like a lion to me. I wonder what your special abilities are..." Harry shook his head.

"I look like a mummy!" yelled Dan as he looked at himself. Struggling to hold in his laughter, Jim punched him on the shoulder, causing the bandages to unravel slightly.

"It could be worse," said Harry with a shrug. "You could be a fairy. No, that would remind me too much of Sissi..."

A flash of pain shot across his face.

"Is William around?" asked Jim. "And could you get down?"

"He's behind you," said Harry as he jumped down.

"Hello Mummy." William bent over laughing.

"And what are those?" asked Jim as he pointed at some strange creatures.

"Kankrelats!" William held his hands out as a sword materialised in them. "Did you summon them Harry?"

"Nope. Let's just hope that it's a slight bug from the computer being deactivated for so long."

"What can we do?" asked Jim, eager to fight. "Do we have superpowers or something?"

"Everyone here has superpowers," called Harry as he ran towards the monsters. "Watch this."

Harry blurred and the monsters exploded into pixels.

"Cheater," grumbled William before wincing as a laser hit him.

"Be careful William. We can't devirtualise at the moment."

"There has to be something we can do..." Jim's hand went down to his waist and touched something. He pulled it out. "A handle?"

He pressed the button on the hilt and a curved beam of energy formed. Jim whistled in appreciation as he sliced the monster in half. Several lasers hit Dan who disappeared into pixels. "He isn't dead, is he?"

"He'll be fine," said Harry dismissively. "He'll be a bit exhausted but alive. And is that a lightsaber?"

"Good... ah!" Jim was sent flying as he disappeared too. Harry and William looked at each other and shrugged before taking care of the reminder of the monsters.

Scanners

"That was so cool," crowed Jim as he exited the scanner. "Harry didn't say that there were random encounters!"

"I feel sick," moaned Dan before glancing at the time. "It's been longer than expected. Let's go Jim."

Jim's dorm

Stumbling into the dorm, Jim grinned slightly. "I so can't wait to go back."

"You there Jim?"

"Harry?" Jim stared at the PADD. "How?"

"I just connected the device to the supercomputer. It's a hidden function built in by the looks of it. Clever Jeremy."

Tapping the device, Jim surfed through the files.

"Return to the past? What's that?"

"It does exactly what the file is called. Return to the past."

"Time travel? The computer can time travel?" asked Jim eagerly.

"Yep. Got me and my friends out of a few sticky situations."

"Can we continue this discussion tomorrow?" asked Jim as he rubbed his eyes. "I'm feeling tired."

"Sure. I don't need to sleep so I'm available at any time."

Jim left the PADD as it lifted up slightly before landing on the desk again.

Morning

Jim woke to a crash. Jumping upright, he stared at the floating PADD. Most importantly, the eye symbol on the display.

"Jim? You alright?"

Sparks came off the PADD as a bolt of electricity nearly got him. The door burst in as Jack and Dan forced the door.

"What on earth..." The PADD fired again. "Run!"

"What is that thing?" yelled Dan as the device chased them. People screamed. "What's wrong with it?!"

"I don't think you'll believe me. You know the abandoned factory? I need to get there, speak to someone."

"Dan? What's wrong?" asked Danny as the three rounded the corner. The PADD fired as Danny yelled.

"It's after me! Go!" ordered Jim.

"No way!"

Sighing, Jim led them through the boiler room and into the sewers. They head run through a crowd so the device had lost them for now.

"Do you think it's gone?" asked Dan as he puffed.

"No. Come on. This way."

"Not unless we get some answers," said Danny as she blocked Jim's path. "This started the day after you arrived. You have to have something to do with it. What's happening?"

"I'd like to know to," piped up Jack.

"I found a computer yesterday and activated it. It held a virtual world that can affect our world along with two computer programs called Harry and William that think they're human. Apparently they're from two hundred years ago and got stuck."

"That's all very interesting but what does this have to do with that rampaging PADD?" asked Jack with a raised eyebrow. "Which, as far as I know, is impossible. PADDS can't levitate or shoot electricity. Plus, this sounds like something out of science fiction."

"Well, they said they fought a computer program called Xana which can control electricity and attack our world using Lyoko. But they also said they destroyed him. Harry mentioned that one attack was a giant teddy bear. Trust me, it's all true."

Jim pushed past Danny who has a weird look on her face and continued on. Glancing at each other, they followed, not noticing that someone was following.

Lab

"Harry! William! You still here?" Rushing over to the terminal, Jim pressed buttons as everyone else except Dan stared in shock and awe.

"Where else would we be?" asked Harry in slight confusion. "And shouldn't you be in school?"

"You told me to tell you if something odd happened. There's a floating PADD that's shooting electricity."

"Xana? But how?" asked William to no-one in particular. "He's done for. He has to be."

"Is there a way to check?" asked Jim.

"There is. I need you to follow my instructions."

Slowly, Jim typed in what Harry told him to.

"Who is that?" asked Jack as the three walked over.

"I could ask the same of you," said William.

"I'm Jack. You haven't answered my question."

"I already told you their names," interrupted Jim as the display came up with the scan. "Now what Harry?"

"There should be a string of numbers. Can you tell me them?"

Frowning, Jim found the numbers and read them out as Danny stared, fascinated.

"This computer is way advanced. You say you've been in there for two hundred years?"

"Uh, who are you?" asked Harry.

"I'm Danny. Can you answer my question?"

"It was the late two thousands, is that right William?" Harry turned to the boy.

"That's what I remember."

"Late two thousands when we were trapped so about 230, 240 years give or take a few months. Or years."

"That old," whispered Jack. "Before world war three."

"Ok, on to business. We need to get to the ice sector."

"No way. I'm not going there again," interrupted Dan. "Last time, we were shot at and I swear that I'm still aching."

"Well, someone needs to operate the computer," said William as he and Harry started to walk to the Way tower in the desert. "And didn't you say that you were interested in computers?"

"Aren't we above our heads?" asked Jack.

"Not really. We did it two hundred years ago," said Harry with a shrug. "And we didn't have some of the technology you do. Anyway, I don't think the supercomputer will shut down with the tower activated."

Running to the elevator, Jim turned around and stared at the other three. "What are you waiting for? We need to stop this before someone gets hurt."

"And I'm going to go tell my father," said Molly as she made her presence known. "This computer is too dangerous to be allowed to be kept on."

That cemented the decision for the other three. "There are people living in there," said Danny. "And I want to help them."

"Whatever. Like I care what you think." Molly flipped her hair before heading back up.

Jack and Danny stepped into the elevator after recalling it with Jim and Danny pressed the button. "Get ready to do whatever mojo you need to do to send us there big brother."

Sighing loudly, Dan turned to the computer and typed in what Jim had earlier.

"Transfer Jim. Transfer Jack. Transfer Danny. Scanner Jim. Scanner Jack. Scanner Danny. Virtualisation."

Lyoko

"Is this a desert?" asked Jack as he squinted. "And what am I wearing? What am I?"

He looked like a block of ice in the shape of a human. Even his clothes were ice. Danny burst out laughing before looking down at her clothes.

"I'm a bear! Why am I a bear?"

"Because your avatar is taken from your subconscious." Everyone turned to stare at the ninja. "At least I think it is."

"Why can't I have a cool avatar like that?" asked Jack. "I look like a nitwit."

"You look like a really blue person. I don't know what that says of you. I think we have more important things to do than to discuss avatars. Come on."

Harry looked them towards a way tower as William looked around.

"So, who or what is Xana?" asked Jack.

"Xana is a dangerous program. He's an AI," explained Harry. "He's also after my body. I'm way too powerful for my own good."

Sighing, Harry placed his hand on the tower. "I never thought that Xana would come back. Not that I had much time to think about it. This is the second time he's survived. Come on."

Kadic

"Dad! You have to come with me!" Molly tugged on the principal's arm.

"Not now Molly. Can't you see that I'm busy?" The principal sighed. His daughter could be so demanding. "I've got to sort out this business about the floating PADD."

"It's important! The new kid, Jim Kirk, found this computer and it's causing this! Please believe me! The computer should be turned over to Starfleet."

Molly started to pull him away.

Lyoko

"Whoah! We've changed location!" Jim stared at the icy landscape. "First there was that Forest, then the desert and now a glacier!"

"Yeah, there are five sectors. Forest, Ice, mountain, desert and sector five in the middle which contains the core programming of Lyoko." Pressing his hand to the ice, Harry closed his eyes.

"What is Xana?" asked Jack. "You mentioned the name but we don't know much about him. You did kinda explain but I didn't really understand."

"Xana is an artificial intelligence program," explained William as Harry didn't respond. "Like a virus that can control electricity. He attacks the real world by activating towers on Lyoko."

"Seriously?" asked Danny with a raised eyebrow. "If he's so dangerous then why didn't you tell anyone?"

"Because nobody would believe us," said Harry as he stood up. "This way."

"Huh?" Twisting around, William stared down a Krabe before his sword appeared in a cloud of smoke. "Dan, you could have warned us."

"Sorry. I was too interested in what you were saying."

Jim pulled out his slingshot. "Where's the weak point?"

"On the top." Spinning a kunai around his finger, Harry flicked his hand and the Krabe imploded. "Dan, could you see what Danny and Jack have as a weapon?"

"Uh, Jack apparently controls ice." William snickered. "And Danny can use her claws to destroy things."

Danny growled as she leapt at the monsters before stabbing one as her claws extended with a white light. Harry launched a shuriken and destroyed the last Krabe.

"We'd better get to the tower. Let's move."

"Wah! The PADD's going for me!" Dan ran around the room as he yelled.

"What is going on here?"

"Who's that?" asked William.

"That's the principal," explained Danny. "Molly got him."

"We definitely need to hurry up. And we can see it!" Harry pointed at the glowing tower. They ran towards it before skidding to a halt.

"Ok, who or what is that?" asked Jack as they stared at the clone of Harry.

"Xana." Harry closed his eyes.

"Welcome back Harry. It's been some time since we last met. I've been lonely." The voice, so like Harry's, was soft.

"Sorry to keep you waiting." Harry clenched his fists. "And I have to get to that tower. So go away. And if you're not going to, you can tell me how you managed to survive."

"You know my answer to going away. As to how I survived, we are the two sides of the same coin. One cannot survive without the other. You were how I survived."

"Neither can live while the other survives," muttered Harry to himself. "That old prophecy. And I still have your source codes. They act as an anchor."

"Why are you still fighting?" Xana starting circling around Harry. "I can tell you're hurting. Grieving over your friends deaths. I could take the pain away. You know I can."

Closing his eyes, Harry tried to block Xana out but couldn't help listening. The offer was so tempting. He knew that if Xana took control, he wouldn't worry about anything as well as not caring about anything but serving Xana. He wasn't even aware that he had started upwards the cloe.

"In fact, I could bring them back." Xana faced Harry with a devious gleam in his eyes. Placing his hand on Harry's shoulder, William squeezed it.

"Don't listen to him Harry. No one can bring back the dead. Not even Xana."

"What do you think I'm trying to do? It's just so tempting."

"You're out of time. A relic. Ancient. You can't hope to understand the differences between now and our time." Xana circled again. "No one can understand you or hope to become your friend."

"Not true."

"Huh?" Harry turned to look at Jim.

"That's not true! I haven't known him long but I think I can say that Harry is my friend!" Harry smiled. "Just because he's from two centuries ago doesn't mean that he can't adapt!"

Danny and Jack nodded in agreement.

"Harry! Beat his ass!"

"What?" asked Xana in confusion. "You met yesterday. Why do you trust him?"

"That's something you'll never find out." Harry stabbed the clone before it had time to react.

"Harry, don't you have a job to do?" asked William. Harry nodded and walked up to the tower before staring at it. Sighing, he entered the tower and rose up to the second level.

Harry

Code

Lyoko

Lab, sometime later

"I demand to know what's going on," said the principal.

"Uh…"

"Molly, there was no need to tell the principal," said Dan in annoyance. "And did Harry and William come back?"

"No. It doesn't work like that." Jim shook his head. "We need to develop a different program to materialise them."

"You four are to switch this thing off and come with me. You are in so much trouble."

Frowning, Jim remembered something. He rushed over to the computer. "Harry, the return to the past. How do you activate it?"

Harry quickly instructed Jim on how to use it.

"Return to the past now!"

A bright light quickly covered everything.

The day before

"Ok, what just happened?" asked Dan as they sat down on the table. "We were doing this yesterday."

"I'd like to know that too," added Jack as he appeared with Danny.

"Time travel happened. We are literally in the past. Look, here comes Molly."

"Jack would you like to go on a walk with me?" asked Molly, breathless.

"NO. Now go away. I'm trying to make the new boy comfortable. And I don't plan to go out with you."

"Be like that. You do love me really."

"Honestly," muttered Jack. "I think we need to talk to Harry."

Lab

"Ok, Harry. How did we get back here?" asked Jack.

"The simple answer is time travel. Our memories get sent back," explained Harry.

"I think we should shut the computer down," said Jack. "No offence you two but it's simply too dangerous."

"We know that," said William. "We've survived more attacks than you have. Harry's survived more than I have."

"We do know how to stop the attacks," said Danny with a shrug. "We could free Harry and William while getting Harry to a tower whenever Xana attacks."

"Or William," added Harry. "William still has Xana's source codes. He could deactivate them."

"And I've never seen a computer like this before," added Dan. "It would give me a head start for when I go into computers."

"Well, we could emulate the first group of Lyoko warriors," suggested Jim.

"We can't ask you to do this," said Harry.

"Shut up. We're doing it whether you like it or not."

Lyoko, sometime later

Harry looked out over the desert before closing his eyes.

"Stop beating yourself up. Xana's survival had nothing to do with you."

Harry glanced at William before looking out over the desert again. "I just want this to end."

"Me too but as long as Xana lives, we have to fight him." William smiled slightly as he touched Harry's shoulder. "And we're not alone."

Harry smiled as the two stared out at the desert. "We'll defeat him for good one day. I know we will."