Sabotage (S03E09)

After Xana disrupts the supercomputer, strange glitches start appearing in Lyoko. With power depleting quickly, Jeremie must fix it before it fails entirely. Unfortunately, he loses track of the boys' dorm inspection, leading Jim to make him stay behind. Meanwhile, Xana takes control of some vines to ensnare the others, leaving only Aelita unscathed. As the ongoing assault continues to sap energy from the supercomputer, Aelita decides to eliminate The Ice Sector, leaving only The Mountain Sector remaining.