Code Lyoko (2003)

Episode Overview

While on a field trip with her 10th-grade classmates, Yumi encounters a chilling situation as Xana takes control of the students, teachers, and even the bus driver. Meanwhile, Xana devises a new strategy to eliminate Lyoko by systematically destroying each sector. To achieve this, he uses the Scyphozoa to take over Aelita and infiltrates the way tower, initiating Code:XANA and obliterating The Forest Sector, a devastating revelation for Jeremie.