It's holiday time at Kadic and everyone is headed home. Aelita, however, has no home to go to. As she watches over Lyoko, she gets a message from Franz Hopper, who has constructed a simulation bubble of their mountain home on Lyoko. Though happy to see her father, Aelita quickly learns that the entire thing is a trick from X.A.N.A. – her father is just an illusion in the simulation bubble on Lyoko. William is there waiting for her in order to throw her in the Digital Sea. However, she escapes resulting in William chasing after her. The rest of the group, having been unable to contact Aelita, follows her onto Lyoko, but they fail to keep William from throwing her into the Digital Sea. When it seems as though Aelita is gone for good, she is lifted from the sea by the real Franz Hopper, who has manifested himself as a floating white bubble with a pink aura. After dropping her back on Lyoko, he returns to the Digital Sea.

现在是学校的假期，每个人都回家。Aelita 却无家可回。当她守望着 Lyoko 的时候，她收到了Franz Hopper发来的信息。虽然很高兴见到父亲，但 Aelita 很快就知道这一切都是 X.A.N.A. 的诡计--她的父亲只是幻象。William 在那里等着她，想把她扔进数字海...

Les Lyoko-guerriers retournent dans leurs familles respectives pour les fêtes de fin d’année... à l'exception d'Aelita, dont le passé reste un sujet douloureux.

Os Guerreiros de Lyoko regressam para junto das famílias nas férias de Natal, exceto Aelita, cujo passado permanece uma dolorosa memória.

Han llegado las vacaciones de Navidad y en la academia todos los chicos se van a pasarlas con sus respectivas familias. Todos menos Aelita que no tiene a dónde ir, a su madre la han secuestrado y su padre sigue en manos de Xana. Ya sola, de regreso a su cuarto se encuentra con una gran sorpresa: a través del ordenador su padre intenta comunicarse con ella.