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Cold Sweat
Episode No. 92
Production No. 427
Air Date 12/01/2007
Sector Ice Sector Replika
XANA attack method Replika Materializing William. Attempting to destroy the Skid with the Kolossus.

Cold Sweat is the ninety-second episode of Code: LYOKO. It aired on 12/01/2007.


When Yumi is coming to school one morning, she finds that an embarrassing picture of her has been printed in the Kadic Newspaper. Milly and Tamiya reveals that it is one of her friends who has given the picture to them, and that he is in the wreck room. Yumi goes with great anger towards the wreck room, convinced that it is Odd who has sent in the picture. In the wreck room, Ulrich and Odd are playing fuzzball when Odd gets a call from Tamiya telling him that Yumi knows about him submitting the picture. Odd convinces Ulrich to take the blame for him which he does with some hesitation. When Yumi comes into the wreck room, Ulrich tells her that he gave Milly and Tamiya the picture. Yumi is furious, and storms out of the wreck room. In the schoolyard, Yumi runs into Jeremie and Aelita who informs her that they have discovered a new replika on the network. They are going to destroy it later that evening.

That evening, Jeremie is sitting in the Lab overseeing the Skid's docking procedure on the Ice Sector replika. They discuss who is going to get teleported to the replika's supercomputer, and Aelita suggests that Ulrich and Yumi go, but Yumi refuses. They finally settle on the decision that Odd and Yumi will go. They are then teleported to a Siberian Research Facility in the middle of a snowstorm. They head over to the research facility which they can see in the distance. They go into the facility, while Jeremie tries to download a map over it. After he has downloaded the map and located Yumi and Odd, he tells them to go down a corridor. Suddenly the Superscan warns that a tower has been activated on the replika. When Yumi and Odd come into the main room, they are shocked to see William materializing before their eyes. Jeremie tells Aelita and Ulrich to go and deactivate the tower.

Ulrich and Aelita energizes outside of the Skid, and head for the tower on their vehicles. Meanwhile, Yumi and Odd have William to deal with. He manages to deflect Yumi's fans with his sword, but Odd eventually hits him with his lazer arrows. They run over to a door on the other side of the room while William is disabled. As they approach the door, William manages to lock it using his mind. Jeremie begins to hack the lock. William tries to strike Yumi down with his sword, but Odd shoots him down just in time. Jeremie then hacks the lock and the door opens. Yumi and Odd proceed down the hallway as the door closes up behind them keeping William out.

On the replika, Aelita and Ulrich are coming up to the tower. A Megatank tries to stop them, but Aelita takes it out with her Energy fields. They see that the tower is on an ice bridge guarded by two Tarantulas, but heavy fire forces them to retreat behind an ice wall.

In the Siberian Research Facility, William breaks through the locked door and chases after Yumi and Odd down the hallway. Jeremie tells them to hide somewhere until Aelita has deactivated the tower. Yumi and Odd decide to hide in some kind of a laboratory. They observe a few tanks which contains brains floating in some kind of liquid.

Jeremie urges Ulrich and Aelita to hurry up in their effort to get to the tower. Ulrich decides to force his way through, and he uses his Supersprint ability to sprint towards the Tarantulas. When he closes in on them he jumps up and throws one of his swords at one of the Tarantulas. Aelita takes care of the other one before it takes care of Ulrich. Aelita then runs into the tower and elevates to the top. In the research facility, William has found his way into Yumi and Odd's hiding place. In the tower, Aelita is about to enter the Lyoko code when she realizes that the data in the tower can be used to free William. She starts to transfer the necessary codes and programs over to Jeremie. William is just about to take Yumi and Odd out, but luckily for them, Aelita is finished with the data transfer and enters the code Lyoko, which makes William disappear.

Ulrich and Aelita think that their problems are over, but then Jeremie informs them that William has appeared on the replika and that he is heading straight for the Skid. Jeremie materializes the Overboard, and Aelita and Ulrich goes back to the Skid. They make it back just before William is about to enter the tower and terminate their mission. After a short sword fight between Ulrich and William, Aelita manages to take him out with her energy fields. Back in the research facility, Yumi and Odd have finally made it to the supercomputer. They ask Jeremie on how to best destroy it and Jeremie informs them that trashing it would not be wise.

Just then a window opens up on Jeremie's screen. It shows that XANA is taking energy from all of the replikas, but have no idea why. Then the ground begins to shake on the replika, and Ulrich and Aelita are both startled and puzzled. Without notice XANA has created giant of a monster and it is slowly heading for the Skid. Jeremie yells that Ulrich and Aelita must run away. The monster is so huge that neither Aelita's Energy Fields or Ulrich's swords have any effect on it. The monster then slides his huge arm, shaped like a sword, along the ground straight towards Ulrich and Aelita. They try to turn around and run away from it, but they are devirtualized within a fraction of a second. The monster then turns its attention towards the Skid which is now defenseless.

Jeremie decides to bring Yumi and Odd back in, and he energizes them back to the Skid just as the huge monster is closing in on it. Jeremie releases the docking mechanism just before the monster grabs the tower and slams his arm after the Skid. They make a narrow escape. Back on Earth Odd decides to name the monster the Kolossus with a "k" like in KO. Jeremie realises that they have to change tactics and find a more efficient way to destroy replikas.

As the group heads back to the school, Yumi explains to Ulrich her theory about why he submitted the picture to the Kadic News; namely that he did it to make her notice him more. Yumi then decides to forgive Ulrich. But a little later, without Ulrich knowing it, Odd calls Yumi and tell her the truth. The next day, she has sent in a picture of Odd and Ulrich together coming out of the showers to the Kadic News as a revenge. We then see Ulrich chasing Odd around the schoolyard in fury, and the episode ends.

U - yumi in haloween

The embarrassing photo of Yumi.


Preceded by:
Bad Connection
Code: LYOKO episode
Air date 10/27/2007
Succeeded by:
Down to Earth

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