|Published||April 6, 2013|
|Written by||Ghost Plasmore (ODROverdrive)|
X.A.N.A. asks Aelita to come to the Celestial Dome, for he wants to enter the war on Fuse via his monsters. They leave Lyoko, and debate whether to leave the computer on and fight with X.A.N.A. (now simply Xana) or turn off the computer and never trust him. All but William trust him. Aelita consoles William, who worries that the others will suffer the same fate as he. He convinces him to vote "yes," and they go back to the academy where Pike tells them that they need to fight Fuse, who has come to the Academy. Odd goes back to the factory and orders the first set of Xana's monsters.
- This chapter marks Fuse's first attack on the Academy.
- This chapter also containst the first Xana monster materialized.