|Air Date (US)||October 25th, 2005|
|Air Date (France)||January 18th, 2006|
|Written by||Jean-Rémi François, Bruno Merle|
|Storyboard by||Paul Beneteau, Alain le Dong|
|Followed by||Déjà Vu|
Jeremie is woken up to an alarm signal, with no activated towers, so he goes back to sleep. The next morning, while Jeremie and Aelita are investigating Jeremie's computer, Odd looks for the DVD of his movie "I Guess Our Guest is a Ghost" to show the famous news reporter T.V. (Thomas Vincin), who is coming to the school. Later, another tower is activated and Odd, Ulrich and Aelita are sent to Lyoko, only for the tower to deactivate itself. Then another tower activates and deactivates. Jeremie and Aelita stay at the factory while Odd, Ulrich, and Yumi go back to school.
Finally, one more tower is activated and it starts to snow. Then it turns to a blizzard, trapping the three at the school. While they try to get to the factory, they find Sissy, Herb, and T.V. crashed (in T.V.s car) into a tree. As the tree timbers, Yumi pushes Ulrich out of the way and gets trapped in the process. Ulrich stays with Yumi and Odd goes to the factory. Ulrich is terrified that Yumi will die so while Yumi tries to sleep Ulrich tries to get Yumi out of the tree. Unfortunately, Yumi succeeds in sleeping and Ulrich screams when Yumi fails to react to his pleas to wake up. Luckily, the tower is deactivated before Yumi and Ulrich freeze to death.
- The original French name for this episode is Guerre froide.
- Chronologically, this episode takes place after the events of both Temptation and A Bad Turn. However, it is aired before either.
- Though Principal Delmas is very strict at times, in this case, when it starts to snow lightly and Jim tells everyone to stop throwing snowballs, Jim gets hit with one, and Principal Delmas is looking the other way, proving that he threw it.