Disclaimer: I don't own anything… All persons, icons, characters, and places belong to the people who created Code: Lyoko… I'm just a fan.
Quick Preface/Background
X.A.N.A is back behind bars, so to speak. Jeremie has discovered that it takes seven codes to truly keep him there, which he calls "Seals", appropriately. After which, he can finally turn off the quantum computer for good. Especially now since Aelita has all her memories, including the ones that X.A.N.A. stole from her when she first arrived on Lyoko with Dr. Franz Hopper.
Of course, X.A.N.A isn't going to take it lying down. He's been fighting Team Lyoko, almost tooth & nail, to regain his freedom. But despite X.A.N.A.'s opposition, the Kids from Kadic are determined to lock X.A.N.A. away and then pull the plug for good.
Team Lyoko has been gathering data from Sector 5 needed to lock the seven Seals, in order, and they have already locked the first one. The first Seal restricts X.A.N.A. personal movements in the real world and limits the number of towers he can activate during a day. Despite the restrictions of this Seal, X.A.N.A. is still incredibly powerful and doesn't seem to mind showing it off.
At the beginning of this chapter in the lives of Team Lyoko, they are on a mission to gather more data to finish sealing the Second Seal….