Episode Title:
Cruel Dilemma.
Episode Description:
Due to a favorable accident on Odd's part, Jeremy's materialization program for Aelita is finished, but is only good for one use. In turn, X.A.N.A. possesses two bulldozers and sets them on the factory to prevent Aelita's materialization from taking place. Odd goes to Lyoko while Ulrich tries to stop the bulldozers. Ulrich is then knocked unconscious, and Yumi carries him to safety. Odd is devirtualized, and Yumi goes to Lyoko to help Aelita. When trying to stop an attack, Yumi pushes a Megatank to save Aelita, but she falls into the Digital Sea by mistake. To save her, Aelita gives up her materialization program, which allows Jeremy to bring back Yumi.
