After many X.A.N.A. attacks in a row, Ulrich starts to get tired of fighting X.A.N.A. On top of that, he questions his relationship with Yumi and if she feels the same way about him. He begins to hang around a girl named Emily, and Yumi gets jealous, causing a great fight between the group. When X.A.N.A. activates a tower without disturbing Earth, Jeremie forces Ulrich, Odd, and Yumi all to go to Lyoko to deactivate the tower. After being virtualized, a virus infection occurs on Lyoko because X.A.N.A. sabotages the Devirtualization Program, meaning if the group is devirtualized, they will permanently vanish and perish.
Elenco: Jodi Forrest , Allan Wenger , Paul Bandey .