Double Take.In order to compensate for William, who is still under X.A.N.A.'s control, Jeremy sets to work designing brand-new virtual attire and digital "enhanced" weaponry and abilities for his friends and recreating the rest of Lyoko. In order to buy himself time to do this, he activates a tower and uses it to create a clone of his own to attend class in his place. Meanwhile, William's absence is drawing attention, from both the principal and his father. While Jeremy's clone is impressing Jim outside, William appears on Lyoko and tries to put the tower under his master's control. In order to maintain his clone, Jeremy draws more virtual strength from Sector 5 to maintain the activated tower. He eventually runs out of digital energy and the tower is put back under X.A.N.A.'s control. While Odd holds the Jeremy clone off, Aelita, Yumi, and Ulrich go to Lyoko with new outfits and somewhat much stronger abilities and slight improvements of their old weapons. They eventually deactivate the tower. William threatens to push Yumi into the Digital Sea, but before doing so he comes back to his senses. Yumi is saved from the fall by Odd at the last second. Jeremy then initiates a return to the past and creates a William clone to prevent any suspicion about his absence.