Episode Overview
Title: Temporary Insanity Plot: As Odd and Ulrich prepare to depart from Sector 5, they are struck by a mysterious red beam emitted from two Mantas. Following this encounter, both boys begin to exhibit bizarre behavior during a school play, perceiving their surroundings and classmates as adversaries, and engaging in combat as if they were still in Lyoko. Labeled as unstable, they are placed in a hospital while Jeremie investigates the incident. Upon uncovering the source and creating a remedy, Jeremie enlists Yumi and Aelita to help free them. Meanwhile, Xana seizes the opportunity to launch an assault on Lyoko's core, prompting Yumi to defend it while Aelita attempts to assist the boys, who now perceive the real world through the lens of Lyoko.