I don't own Harry Potter or Code Lyoko

Laughing Fit

Ms Hertz was chuckling away and Jeremy was fiddling with his pencil.

"I've never seen her laugh so much," said Jeremy to Odd.

"You're telling me, I've never seen her laugh at all!" exclaimed Odd.

"Laughing gas is supposed to make you relaxed," said Harry.

"The gas I've just inhaled is called Nitrogen Peroxide, N2O, ha ha ha, for those interested in chemistry, ha ha. It's better known as laughing gas. You can see why it's used in hospitals, ha ha ha, to relax patients who are going to be operated on."

"Not a bad idea! Nothing like a laughing attack after an appendix attack!" said Odd.

"I doubt they use it like that Odd," said Harry. "After all, it might rip their stitches out if they laugh too hard."

"Let's try to be serious. In strong doses, the chemical is highly toxic."

"Does anyone sense a potential Xana attack?" asked Harry. "I mean, Xana could try to take control of the gas and make us breathe it in."

"I see what you mean," said Jeremy.

"… And as the saying goes, one can literally die laughing," continued Ms Hertz. "Only one thing can neutralise the gas, water."

She drank some water.

"Enough of that, get out paper for a surprise quiz."

Later

"She's been sulking like that for two days, nothing seems to cheer her up…" said Ulrich as they looked at Yumi who was sitting on a bench.

"I could try some of my jokes on her, which might do the trick!" offered Odd.

"Probably not," said Harry. "No offense Odd but your jokes aren't the best."

"I'm not saying you don't have a good sense of humour, Odd, but I'd rather go and talk to her," said Ulrich as he walked over.

"You think that Ulrich will manage to get her to smile?" asked Jeremy.

"Yeah, sure as Julia Roberts is going to call and invite me to out dinner," said Odd.

"Yeah, I think you're right. She's really down…"

"It's her parents," said Harry. "They've separated for a bit because they were arguing."

"How did you know that?" asked Jeremy.

"Yumi told me," said Harry. "She asked me if I had a way to get her parents back together using my magic because of them arguing all the time and I said I'd have to look around and see if there was a legal way to do it… I have an idea." He walked over.

Ulrich

"Ugh, please, Ulrich…leave me alone, I really don't feel like talking," said Yumi.

"But I feel like talking, and with you!" said Ulrich. "We could go out."

"If you like talking so much, talk to yourself, ok?" said Yumi. "If you want to know what's wrong, ask Harry. He's trying to help."

"If you're talking about help, I have an idea," said Harry. "The school play is coming up."

"So?" asked Yumi.

"Well, we could invite them without the other knowing and audition for a part," explained Harry. "It means we'll have to put up with Sissi but it gets them together and they can't argue in a public place so they might just stop arguing if they can just talk."

"That might work," said Ulrich. "Who's them?"

"I'll think about it," said Yumi as she walked off. "Keep coming up with ideas Harry."

"Don't worry, Ulrich, not all girls are like Yumi!" said Sissi as she walked over.

"Yeah, that's a shame!" Ulrich and Harry started to walk away.

"Are you coming tomorrow, to the rehearsal? Huh?" asked Sissi. "It's thanks to me that Odd's playing the music."

"Yeah, I'll be there. But it's not for you, it's for Odd."

"Do you want any help with lighting?" asked Harry.

"Lighting?" asked Sissi. "No thank you. The role of Romeo is perfect for you Ulrich."

"And I suppose that you, of course, are Juliet?" asked Ulrich.

"Yes, that's perfect casting, don't you think?" asked Sissi

"Well it's a perfect reason for me not to play Romeo." said Ulrich. "Oh, if you want to be friends with me, start with backing off a little."

Science classroom

A socket soaked and smoke came off it. It wandered over to the laughing gas canisters and went inside, releasing the gas.

Yumi's house

Ulrich walked over with a rose and rang the doorbell.

"Oh, it's you darling. I said to myself that we couldn't stay angry at each other…" said Yumi's mum. "Oh, hello."

"Good evening ma'am," said Ulrich. "I was wondering if Yumi was in.

Yumi's room

Ulrich walked up to Yumi and gave her the flower.

"What about your dad?" he asked. "Where is he?"

"Staying with a friend from work," said Yumi as she sniffed the flower.

"What was it your parents were arguing about?"

"I don't know. Mum tried to tell me but I didn't understand and I'm not sure she did either."

"Yeah. Those arguments are the worst."

"I'm glad you came Ulrich. You know how to cheer someone up." Yumi said as she kissed him.

Harry's and Jeremy's dorm

"It's strange that they're mad at each other, Yumi and Ulrich always get along so well!" said Aelita.

"Well, you know, Aelita, very often people who get along well have fights," said Jeremy.

"Really? What about you and I? Why don't we ever fight?" asked Aelita.

"You and I? W-well, I don't know, really…I uh…anyway, I uh…Xana's been quiet lately! Too quiet, don't you think?" asked Jeremy, trying to change the subject.

"It's because you don't have any reason to fight," said Harry as he read one of his magic books. "I'm trying to find a way that will get Yumi's parents back together but most of these are mind control. On the subject of Xana, he's taken control of the laughing gas. I got the memo earlier. I think Xana is always watching me."

"What I worry most is the risks you take," said Aelita. "Xana would love to get rid of you, especially Harry."

"Don't worry! The only one of us who's in any real danger today is Odd, he's rehearsing with Sissi. Now that's what I call a risk!" exclaimed Jeremy.

"We can take care of each other and ourselves," said Harry as he put his book in the bag he spelled to have a bigger interior and put in his wardrobe. "I'm helping out with the lighting but I don't need to be there tonight. Talking about relationships, Aelita, a few months ago, you said that I felt familiar to you."

"I did."

"Have you got anywhere on that?"

"Not yet."

Harry frowned. "When I went to my vault to withdraw some money, I found a diary belonging to my mother. It said that she had a brother called Waldo Schaeffer and that they were separated at birth before finding each other at eighteen. It also said that Waldo had a daughter called Aelita."

"It could be another Aelita," said Jeremy.

"Yeah but Aelita isn't exactly a common name."

"Is there any more?" asked Aelita.

"I haven't read it all as it's in English and my understanding of the language isn't as good as I'd like it to be. I'll tell you when I find out more. Oh, talking of family items."

Harry went to his wardrobe and rummaged around and pulled out a cloak.

"It's a cloak Harry."

"Look at this". He put it on but left his head uncovered. His head was the only thing that they could see.

"Wow!"

"Cool isn't it? It was my birth dads and the bank got it back for me." He took it off and put it away as he rubbed his head. "I have just had a feeling that Xana has become active and it has something to do with laughing gas."

Gym

Odd was playing on the guitar.

"That's awful! It's about as flat as a pancake!" yelled Sissi.

"It's not me, it's the lines," complained Herb. "You can't even say them."

"And Odd, you're playing much too fast!" continued Sissi.

"Sure! If I play a little slower it'll give me more than enough time to take a little nap!"

"Hey, keep all your bad jokes for yourself, huh?!" yelled Sissi. "Let's do this again! And try to concentrate!"

Gas slipped out from behind a curtain and went behind Odd.

"I don't know if she'll appear tonight but I know she loves me! Oh en guarde!"

Odd started to laugh out of the blue. Everyone looked at him.

"What is going on?" asked Sissi. "What is going on Odd? You're not going to want to laugh when I'm through with you!"

She walked down and poured water over him. The gas escaped into the vents.

"Don't bother coming tomorrow! This is a tragedy, not a musical comedy!"

She stormed off.

"Hey, wait!"

Yumi

Yumi rang the doorbell.

"Yumi!"

"Good evening sir. I would like to see my father."

"Just a second. I'll get him. Oh, would you know why your parents aren't talking to each other?"

Yumi shook her head.

"Well, I was afraid of that."

Yumi glanced over to where Ulrich was hiding and he gave her a thumbs up.

"Yumi. How nice to see you," said Mr Ishiyama. "Come in."

"Daddy, I, err, want you to come home," said Yumi.

"Listen Yumi, this is between your mother and me. We've got to work it out together."

"And how is that working? You're not even willing to talk to each other!" said Yumi as she started to get upset.

"I think Harry's idea is the best one," said Ulrich.

"Glad you think so," said Harry's disembodied voice.

"Don't sneak up on me!"

Harry chuckled then disappeared with a small crack.

Harry's and Jeremy's dorm

"It was so weird," said Odd. "I just couldn't stop laughing and I didn't even want to laugh. Once Sissi poured some water on me, I stopped"

"Has Xana possessed laughing gas?" asked Harry.

"Gah! Where did you come from?" asked a startled Odd.

Harry looked at him.

"Oh, you teleported in. Probably invisible too"

"On the subject of the laughing gas, you shouldn't have been laughing that much," said Harry. "It relaxes people. Ms Hertz was chuckling, not full out laughing. I think Xana might have enhanced it somehow. Or given Odd a larger dose. And before you say something Jeremy, I know that's impossible but an electricity controlling computer program is supposed to be impossible too and we know that Xana's one. Aelita, can you keep an eye out on Lyoko?"

"Of course. There hasn't been any pulsations yet though."

Harry paled. "I have just had a rather nasty thought."

"What?" asked Jeremy.

"Remember what Ms Hertz said about the laughing gas being fatal in large doses?"

Jeremy and Odd nodded.

"If Xana has taken control of it, he might try to give use a rather large dose."

"I'm going to check the canisters of gas," said Jeremy.

"I'll work on Odd's new weapon. It's a blast of energy that comes out of his tail."

"Cool!"

"It's going to take some time to control it though. All I need to do is upload it to his avatar and it'll be ready to go."

"You can programs weapons easily."

"Those are easy. The materialisation is hard. Maybe it's got something to do with Aelita having less data than us."

Sissi's dorm

Ulrich knocked on the door.

"If you're coming to apologise Odd, don't bother," said Sissi. "Oh, it's you Ulrich. What are you doing here?"

"I was wondering if there was a small part that Yumi could play."

"And why would I want to give Yumi a part?" asked Sissi.

"Forget that I even asked. Goodbye." He closed the door.

"No. Ulrich, wait." Ulrich opened the door again. "There might be a solution."

Science classroom

"Aelita and me, we never fight. You think that's normal?" asked Jeremy as he picked the lock. "I bet that Harry could get us inside much easier."

"Huh? Yeah, no…how do I know?" asked Odd who wasn't paying attention. "And we can't rely on Harry for everything. He might not be able to help."

"You think we'd fight if she lived here in our world?"

"I think we're going to get caught if you don't hurry up!" exclaimed Odd as Jeremy unlocked the door.

"Bingo!"

They walked up to the canisters.

"Guess we ran out of gas, if you pardon the expression!" exclaimed Jeremy as he examined them. "We'll go to the factory tomorrow morning."

Factory

"Hello Professor Dumbledore. No, I'm not going to Hogwarts," said Harry as the three paused as Dumbledore and two kids appeared.

"You must Harry. Your parents wanted you to go there."

"Well, I don't know what my parents wanted as I never knew them. So go away and take your lackeys with you."

"I have something of your fathers!"

"Are you talking about an invisibility cloak? If so, I've already got it. And don't bother looking for it. It's hidden."

Dumbledore tried a different track.

"These are Hermione Granger and Ron Weasley."

"Nice to meet you. Now I have something fairly important to do. Bye."

The three ran off. The three left behind gaped at the place where they were left behind.

"Go after them," said Dumbledore and the two children followed.

Lab

"It's kinda a good thing that we don't have school today," said Harry as Jeremy connected to Lyoko.

"Aelita? Can you hear me?"

"I'm being chased by Bloks!" yelled Aelita.

"Use your energy field. Or drop down" suggested Harry as Odd went down to the scanners. "Oh, and look. Dumbledore's lackeys followed us."

"What is this place?" asked Hermione.

"It's a data processing plant for a mainframe that supports a virtual world," said Harry as he headed down to the scanners after setting up a protection against the laughing gas that wouldn't affect the computer as well as a ton of water. "Be careful with the water. I don't want the computer to go on the fritz."

Hermione and Ron followed him.

Scanners

"And, there!" exclaimed Harry as he set up a magical protection against laughing gas that wouldn't affect the scanners.

"That's impossible," said Hermione.

"Everyone knows that muggle things don't work around magic," said Ron.

"They solved that problem years ago," informed Harry. "But I guess the reason you don't know is that you're from backwards England. And please don't use the word muggle around me. I prefer the word mundane or normal."

"Are you two ready yet?" asked Jeremy impatiently.

Odd and Harry stepped into a scanner. "Now we are."

"Alright. You're going to the mountains where Aelita is. Transfer Harry. Transfer Odd. Scanner Harry. Scanner Odd. Virtualisation!"

"Where did they go?"

Lab

Gas slipped in through the vents

Lyoko

"Mountains. Well, at least it's better than the ice sector. Jeremy, where's Aelita?"

"She's in a tower."

"That's very helpful."

"Harry, you are to come back to earth immediately!" ordered Hermione as the two walked up to the computer and into the protection.

"Err, no thanks. I'm of more use here."

"Harry, you can sense the position of Aelita, can't you?" asked Jeremy.

"Yep. I'll just use that then. Follow me Odd!" They started to run.

Kadic

"Well, there we are," said Sissi. "I've put your lines up everywhere. You'll see, you'll make a perfect Romeo!"

"Hey, I'm doing it for you!" Ulrich said to Yumi.

"She's right, you know. You do make a perfect Romeo," said Yumi, remembering the flower.

"Ok Yumi, come with me so I can show you your costume," said Sissi. The two walked off.

"I can't believe you stole my part," said Herb jealously.

"It isn't my fault. I'm only trying to help Yumi out."

"I wonder why I don't just slug you!"

"Fear maybe?" asked Ulrich.

"Please don't tell me I look too dumb," said Yumi in her costume.

"You look stunning," said Sissi.

"I hope we're not doing this for nothing," said Ulrich. "Did you talk to your folks?"

"Yeah, they're both going to come."

"Both of them? How did you do it?"

"I lied. I told them that the other one wouldn't come."

"Ha, adults can be such children sometimes, huh?"

Lyoko

"Can you two hurry up?" asked Jeremy as the gas drifted closer. "The gas is trying to get to us! your barriers are weakening!"

"Well, duh Jeremy," said Harry. "It's trying to kill you and the other two are in the wrong place at the wrong time. I have an idea! Split up. Odd goes to Aelita, I go to the tower! Where is the activated tower?"

"I'll run the scan."

Gym

Delmas said 'Good evening' to every one of the visiting parents.

"Good evening. I suppose your husband is meeting you here tonight?" asked Delmas to Yumi's mum.

"Uh…no, my husband isn't able to come. He's uh…not feeling well!" Yumi's mum said as an excuse. She walked in

"Oh, Mr Ishiyama! I'm delighted to see that you're feeling better already!"

"Feeling better?"

"Your wife has just arrived."

"My wife is here?"

He spotted her and sat sown next to her. They ignored each other.

"You're not out of the woods yet," said Ulrich.

Lyoko

Odd destroyed the Bloks in front of the tower Aelita was residing in before running in.

"Aelita? Are you there?" he called.

She walked out just as Odd destroyed another Blok.

"We'd netter not stay here. Xana will send more monsters."

"He's more likely to be focusing on Harry than us."

"Well, Jeremy, how do you want to die? Freezing or laughing?" Jeremy asked himself as he threw water at the gas. "I swear it's getting colder in here."

"Just do something!" demanded Hermione. "And give us Harry."

"First of all, we are doing something. It's just taking a while. Secondly, I won't give you Harry. He's my best friend and he's not an item to be given away."

Gym

"I'm not sure that she'll… appear at this balcony tonight.., what does it say? Oh right. Does she love me the way I think she does?! Enter Guard?"

People started to laugh.

"Guard? Guard?"

Yumi entered, paused and exited.

"Look. It's Yumi." Yumi's parents stopped laughing.

"Boy, they're tough. Oh no. what are my next lines? We didn't have enough time to rehearse."

Sissi walked onto the balcony and looked down.

"I see them."

N20 started to surround the building and slipped in through the gaps. It went into the gym and people started to inhale it.

Lyoko

"Where's that tower?" muttered Harry. "I've checked most of the sector by now. Jeremy, are you sure the towers in this sector?"

He glanced down and saw pulsations. "Ok. Now I just follow them."

He ran off into a labyrinth. "This is all I need. I'll go the easy way."

He jogged back a few paces and ran forward at top speed jumping at the right moment. He jumped over the wall and did the same thing again for the next one.

"Look, its Harry," said Odd as they saw him jumping. "I guess he's going the more direct route. We don't need to worry."

Gym

"You who lights up my day, you who is my sunshine and my nights…"

"This is awful! He's massacring my text, huh! Even you were better!" said Nicholas as the gas crept to the front.

"Oh my Romeo. You are my bow. Oh Romeo."

The gases got to Ulrich who started laughing. So did everyone else except Sissi.

"Huh? What did I say? What's so funny? Everyone's laughing at me now."

"This is so abnormal. They're going to choke."

"We need to find a way to help."

Sissi poured some water on Ulrich who stopped laughing.

"What happened? It was like I was being controlled."

"What?"

"This thing is afraid of water. Give me that." He took the water from out of Sissi's hands and poured it on Yumi.

"Yumi? You ok?"

Her parents walked up and hugged her.

"Oh darling. We were so frightened."

The gases got to Ulrich again and he started to laugh.

"Ulrich!" Yumi started to laugh as well.

"What's going on?" asked Delmas.

Lyoko

"Harry, I don't mean to rush you but you need to hurry! The gases are getting through!"

"Jeez, Xana is persistent," said Harry as he approached the tower. "I'm nearly there anyway. Hey Odd and Aelita!"

"We saw you jumping," said Odd. "That's a way to get around this place."

"And the scan has just finished. How did you find it?" asked Jeremy.

"Well, it's hard to ignore a rather large cylinder that glows red. I'd better go deactivate it."

Harry walked up to the screen and pressed a palm to it.

Harry

Code

Lyoko

Lab

The gases dissipated.

"Well, that's a relief," said Jeremy. "Now what to do with these two. They've seen too much."

"You know the drill."

"What drill?" asked Ron. "Harry, mate, will you tell us?"

"I'm not your mate. We only met today."

"Return to the past now!"

Earlier

"You've got to be kidding. I won't ever do that again."

"I can relate," said Harry. "I wouldn't want to relive a traumatic event over again. Like my parents death."

"At least we know how to get your folks back together," said Odd.

"I'm not going to wear that stupid costume!"

"I have an idea! Sorry Ulrich but you're going to sacrifice yourself again," said Harry.

"Hey, I can finally see you as Romeo!" said Odd.

"A laughing fit is good for you from time to time. What's wrong Harry?"

"It's nothing. It just feels like I'm meant to help Aelita."

"Sure you are," said Ulrich. "Just like we all are."

Gym

"I don't know if she'll appear tonight on her balcony but I'm certain she loves me."

"And I know I love her very much," said Yumi.

"And I know I love her very much," repeated Ulrich. "Ah no! A guard!"

He ran behind the bush as Herb walked on. People started to laugh.

"Where's Yumi? Wasn't she supposed to be in the play?"

Jeremy pulled on the rope and the fake bush lifted, revealing Ulrich and Yumi. The audience laughed.

"It worked. Harry's ideas are the best."

"What's the matter now? What happened?" asked Sissi. "Why are you all laughing?! You don't understand drama! This is not a comedy, it's a great tragedy!"

The audience continued to laugh and clap.