Episode Overview
After thoroughly examining Franz Hopper's diary, Jeremie uncovers significant details about the supercomputer. Hopper had been trapped in a time loop for over seven years, leading to his mental decline. He reveals that both he and Aelita possess the keys to Lyoko, which Xana desperately wants, needing only Aelita's half to escape. Jeremie discovers a method to liberate Aelita, realizing she never had a virus; instead, Xana held a fragment of her, tethering her to the supercomputer. Angered by Hopper's actions, Aelita refuses to leave, fearing Xana’s potential escape, and shuts down the supercomputer. Jeremie saves her, and they venture into Lyoko to find the missing fragment. Although they believe they succeed, it turns out to be an illusion. Xana defeats Aelita's guardians and steals her memories, effectively eliminating her and escaping, which leads to Lyoko's collapse. In a twist, Hopper revives Aelita and