Kod Lyoko Sezon 2 Odcinek 4: A Great Day

XANA has gained control of the Super-computer's "return to the past" program. At first, our heroes struggle to understand why it would do such a thing... but before long, they realize that Sissi has been possessed by XANA. She is trying to wipe them out! Then finally, the penny drops; the "returns to the past" have been increasing XANA's power and now their enemy is strong enough to control human beings...New dangers in store!