We open to science class where we see Mrs. Hertz laughing and the rest of the class staring at her.
Usopp: I've never seen her laugh so much.
Marucho: I've never seen her laugh at all.
Hertz: The gas I've just inhaled in a small quanity is called N2o or those of you interested in chemistry know it better as laughing gas. You can see how this gas is used to relax patients in hospitals to prep for surgery.
Odd: What a bad idea. Nothing like a laughing attack after an appendix attack.
Hertz: Let's just try and stay serious because taken in large doses, it can be highly toxic causing fatal attacks on the nervous system. Only one thing can stop it: water. Water neutrolizes the gas right in its tracks.
She then drank from a water bottle and stopped laughing.
Hertz: Now please get out a piece of paper for a surprise test.
Later in the quad, we see the group look over at Yumi.
Fabia: She hasn't said anything to us in three days.
Ulrich: I'm going to go and talk to her.
Ulrich then went over to Yumi.
Jeremie: You think he'll be able to get her to smile?
Usopp: His chances are like Luffy's chances of being able to swim, which is never.
Ulrich: Hey Yumi.
Yumi: Leave me alone. I don't feel like talking.
Ulrich: But I feel like talking.
Yumi: Then talk with yourself.
Yumi then left without another word.
Sissi: Come on, Ulrich. There are better girls than Yumi.
Ulrich then began to leave.
Sissi: Wait! Are you coming to rehearsals tomorrow?
Ulrich: I'm going for Odd, not you.
Sissi: Don't forget it was me who got Odd to play the music. I think you would be perfect to play Romeo.
Ulrich: And let me guess, your Juliet.
Sissi: What do you think?
Ulrich: I'll think about it.
meanwhile in the science building, a large cloud of black smoke appeared and flowed to the laughing gas. It entered the containers and flowed out a large purple cloud with a smiling face. Later that evening, we see Ulrich walking up to Yumi's home and knocking on the door. After he knocked, Mrs. Ishiyama arrived to the door.
Mrs. Ishiyama: Hello.
Ulrich: Hello, I wanted to talk to Yumi.
Later in Yumi's room...
Ulrich: So where's your dad?
Yumi: Staying with a friend from work.
Ulrich: So what was the fight about?
Yumi: I don't really know. My mom tried to explain it to be, but I don't think she knew why either.
Ulrich: Those arguments are the worst.
Yumi: I'm really glad that you came. Thanks, Ulrich for cheering me up.
Ulrich then gave Yumi and rose and smiled. Meanwhile in Jeremie's room...
Aelita: But Ulrich and Yumi never fight.
Jexi: Well, Aelita. Sometimes when emotions overflow, they tend to come out in different ways.
Aelita: How come we never fight?
Jeremie: I don't know. Xana has been pretty quiet lately.
Aelita: And he would really like to get rid of all of you.
Jexi: Speaking of getting rid of. Sometime soon, me and the time will go to take another kingdom.
Jeremie: That's nice to hear. So which castle are you going after?
Jexi: The electric kingdom, Violight. Originally, I was going to go after Pugulis, but Krokorok explained to me that one of the nine kings of Aurora is being held captive up there, so as soon as all the equipment is all together, we will head out to defeat it.
meanwhile in the auditorium the cast began to practice for the big night. As Odd began to play his guitar and the cast was rehearsing, the purple smoke then entered Odd and he began to laugh uncontrollably.
Herb: It wasn't that bad.
Sissi: Odd! I'll show you a thing or two.
Sissi then grabbed a water bottle and poured it on Odd and the smoke left him and entered the air vents.
Sissi: And don't bother showing up. This is a tragedy, not a comedy.
Odd: Hey wait!
meanwhile at a random house...
Man: Oh, Yumi. Are you here to see your father?
Yumi: Yes sir.
Man: By the way, do you know why your mother and father aren't speaking with each other?
Yumi: No sir.
Man: I was afraid of that.
As soon as he left, Mr. Ishiyama walked right in.
Mr. Ishiyama: Ah! Yumi! Come on in.
Yumi: Dad, I want you to come home.
Mr. Ishiyama: Yumi, this is something between your mother and me.
Yumi: But how can you resolve it when you won't even talk to eachother.
Ulrich: I know how to fix this.
meanwhile in Jeremie's room...
Odd: And when Sissi dumped water on me, I felt okay and stopped laughing.
Jeremie: Laughing gas. Water was the only thing that can neutralize it.
Odd: You think its a Xana attack?
Jeremie: Only one way to find out.
meanwhile on Sissi's room, as she laid on her bed, she saw the door open.
Sissi: Odd! If you want your part back, forget it.
Ulrich: Its not Odd. I came to see if there was a way to give Yumi a part. I'll do anything.
Sissi: Anything? I know just what to do.
meanwhile Jeremie and Odd investigated the canisters of gas only to find them empty. Later in the morning, the two along with the team arrived at the factory to investigate the problem.
Computer: No communication.
Jeremie: Odd. Time to go in.
Just then, Jexi appeared on the screen.
Jexi: Team. I need you. We have a huge problem. Get here immediately.
Dan: Will you be fine without us Jeremie?
Jeremie: I have Odd. That's all I need. Just go.
The team then went up while Odd went to the scanners below. But as he was getting scanned, some of the laughing gas got in and affected him on Lyoko making him weak.
Odd: Hey, Jeremie. Did something go wrong with the transfer? Jeremie? Jeremie?
Meanwhile with the rest of the group...
Luffy: I wonder what Jexi's calling us for?
Natsu: I think I know.
Natsu then pointed to the clouds to see an army of flying squirrel like creatures firing electric balls.
Sewaddle: What are Emolga doing here?
Akane: They're attacking the city.
Jexi: There you guys are. These Emolga came out of no where and started attacking the town. Their leader is watching somewhere. I saw him land in the forest. I've already sent Wendy, Carla, Sanji, Kiyo and Zatch to find him. Right now, I need you guys to help stop these Emolga. Wait, where's Ranma?
Natsu: He's doing something.
Jexi: What could be more important than this? Nevermind, I'll talk with him later, right now we need to get the situation under control.
The group then headed after the sqaudron of Emolga. Meanwhile in the gym, Sissi was putting up the lines for Ulrich.
Sissi: There we go. I've put your lines up everywhere, Ulrich. You'll make a perfect Romeo.
Ulrich: I'm doing this for you, Yumi.
Yumi: She's right, you know. You do make a perfect Romeo.
Sissi: Okay, Yumi. Come with me and I'll show you your costume.
Yumi then left with Sissi.
Herb: I can't believe Sissi gave you my part. I wonder why I shouldn't slug you right now.
Ulrich: Fear maybe?
Yumi: Please tell me I don't look to dumb.
Ulrich then saw Yumi dressed in a renassance guard uniform.
Sissi: You look stunning.
Ulrich: So did you talk to your parents?
Yumi: They're coming.
Ulrich: Both of them? How did you pull that off?
Yumi: I lied. I told one that the other wasn't coming.
Ulrich: Adults can be such children.
Meanwhile in the factory, Jeremie was trying to avoid the purple smoke that followed him. He continued running to a door with the smoke following. Meanwhile on Lyoko, Odd made it to the tower oly to find it surrounded by Bloks.
Odd: This is not a good time to abandon me Jeremie. The welcoming commitee's here and I feel weak.
The Bloks then saw Odd and moved towards him. Meanwhile in the sewers, Jeremie continued to avoid the smoke that came after him. He then jumped into the water as the smoke followed after. The smoke then quickly went out of the water and disappeared as soon as it got out. Meanwhile we see the principal greeting parents coming to see the play. Just then, Mrs. Ishiyama arrived.
Delmas: Hello. I assume your husband will be joining us?
Mrs. Ishiyama: No. My husband is not feeling well.
She then walked in not knowing that Mr. Ishiyama was following.
Delmas: Ah! Mr. Ishiyama. Delighted to see your better. Your wife just arrived.
Mr. Ishiyama: My wife?
Mr. Ishiyama then walked in and sat next to his wife. The two then looked at each other and then looked away.
Ulrich: Your not out of the woods yet.
Meanwhile on Lyoko, the bloks began to advance on Odd.
Odd: I'm too weak to fight them. I'll have to trick them.
Odd then fired an arrow destroying a bolk and the other fired at him. He then jumped over the edge of the platform. The blok then looked for him, but did not know that he was underneath it. He then jumped back above and tried to fire, but missed.
Odd: Aelita!
Aelita: Odd?
Aelita then stepped out of the tower which made the blok turn towards her. But before it could fire, Odd destroyed it.
Aelita: We have to move. Xana could be sending more monsters.
The two then began to run to the activated tower. Meanwhile in the forest, we see a familiar bird grooming himself.
Staravia: My Emolga must have taken this world by now. And I'm going to look my best for the ladies. Grrr!
Kiyo: You are so full of yourself.
Staravia then turned to see the five people behind him.
Staravia: How did you find me that fast?
Carla: You left a trail of feathers behind you.
Staravia: I had to pluck out my loose feathers on the way here. I have to look good for when this world goes to the electric kingdom.
Wendy: You don't look like an electric type?
Staravia: I may not be an electric type, but I'm still Violight's top general.
Sanji: Then we're going to take you down.
Staravia: We'll see about that. Aerial Ace!
Staravia then flew in a loop and towards the heroes, but was quickly dodged, but barely.
Sanji: He's pretty quick.
Staravia: Time for some more Aerial Ace's!
Staravia continued to fly at them, trying to hit them.
Kiyo: We need to ground him.
Sanji: I'll take care of him.
Staravia then came flying towards Sanji.
Staravia: I have you now, curly brow.
Sanji: Collier Shoot!
He then delivered a strong kick to Staravia's neck, sending him down into the ground. He quickly got back up.
Staravia: How dare you ruffle my feathers. I just groomed those. That's it!
Staravia then flew high above them and then dived down on them.
Staravia: Brave Bird!
Kiyo: Zatch, get ready.
Zatch: Right, Kiyo.
Zatch then ran below Staravia. Kiyo pulls out a red book and opens it.
Staravia:You are a fool, child. I'll make this quick.
Kiyo: Zaker!
A bolt of lightning then shot out of Zatch's mouth towards Staravia.
Staravia: This boy can use lightning?
Before Staravia could dodged, he was hit by the lightning and then crashed down onto the ground. Staravia was on his back completely unconscious.
Sanji: That's that. Now those stupid squirrels will have to retreat without a general to lead them.
Meanwhile on Lyoko...
Odd: SOmething must have gone wrong with the transfer. I feel really weak.
Aelita: Hang in there, Odd. The tower can't be that far away.
As they walked forward, they soon came across a large labyrinth and entered. Meanwhile at Kadic, the purple smoke traveled into the school and into the gym where the play was happening. Meanwhile in the sewers...
Jeremie: There are two ways to go out. Freezing or Laughing.
Jeremie then dove down into the water and swam up the stream of water to escape from the cloud above him. Meanwhile as Ulrich as saying his lines, the could got to him and he began to laugh. The crowd began to laugh thinking it was suppose to be funny. The smoke then flowed into Yumi and she began to laugh. Sissi then became furious and poured water on Ulrich, which lifted the gas.
Ulrich: Yumi! Sissi, give me the water bottle!
Sissi: You could say please.
Ulrich: Give me the bottle.
Sissi then gave in and gave him the bottle. He poured the water on Yumi just as her parents came to her. But then the gas came back and got into both of them. The principla then went for help as he saw this. Meanwhile in the sewers, Jeremie had gotten onto dry land trying to outrun the smoke, but was eventually caught by it nd began laughing. Meanwhile on Lyoko, as Odd and Aelita traveled down the labyrinth, Odd had a future flash and saw the correct path to the tower.
Odd: Okay, as soon as you get to the end of this corridor, you go left and then your at the tower. You go ahead without me. I'm too weak.
Aelita: All right.
Aelita then went down the right way and ran into the tower. She then entered the code and deactivated the tower before the smoke could strike again. The RTTP was then launched. We then reopen at the play where Ulrich had just finished his part and went behind a fake bush. But as he did, the group behind the curtain pulled up the bush revealing Ulrich and Yumi together causing the audience to laugh, including Yumi's parents.
Usopp: Well, we got them back together again. Problem solved.