Seeing Is Believing

While Odd is trying to form a new band, X.A.N.A takes control of the school's electricity supply. Leading the investigation, our heroes understand that the fiendish X.A.N.A computer is also planning on blowing up a nuclear power plant. A little concentration during gym class will help them make the right decision! In fact, the danger is so great that they decide to reveal the existence of Lyokô, the virtual world that only they know about, to the authorities. But it all seems so far-fetched that in the end, no one believes them. Yumi, Aelita, Jeremy, Odd and Ulrich have only themselves to turn to stop a nuclear explosion from destroying the city.

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

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.