The Robots

X.A.N.A. has taken control of the assembly line in the deserted factory. Herv and Jeremy's droids, which they have made for the school's Robot Encounters Day, are fighting one another in the gymnasium. Meanwhile, another, much more frightening robot created by X.A.N.A. turns up at the school, creating panic and mayhem. Our heroes have no time to lose. While Odd and Jeremy rush to the laboratory, Yumi and Ulrich try to eliminate the robot, which is hot on their tails. But things are not as easy as they seem: the Robot has destroyed the laboratory, which means that no one can get to Lyoko until it's up and running again, and Aelita is in danger! What's more, thanks to its artificial intelligence and reinforced armor, XANA's Robot seems indestructible. And Jeremy has to stay in the factory to fix the lab! Out of sheer desperation, Yumi and Ulrich will have to join forces with the enemy, and ask Hervé to help them!

Jeremie Belpois, Ulrich Stern, Odd Della Robbia, Yumi Ishiyama, Aelita, X.A.N.A., Elisabeth "Sissi" Delmas, Dorothy, Mrs. Suzanne Hertz, Herb Pichon, Nicolas "Nick" Poliakoff, Jim Morales, Tamiya Diop, Milly Solovieff, Jean-Pierre Delmas, Kiwi

There are 52 episodes planned.

Air dates shown are for those in the U.S. on Cartoon Network. In fact, the series first aired on France 3 on September 3, 2003.