Xana's back! After the events that transpired in the first B:CL, the world returns to normal. Reconstruction has begun in Europe and more steps are being taken to avoid another devastating attack. As Yumi, Odd, and Jim attend a ceremony in Hawaii, Jeremy, Aelita, and Ulrich stay back to watch for Xana. However, the events about to transpire is about to test Humanity's will to live.

Battleship/Code Lyoko X-over. A field trip turns disasterous as Xana shields in, not only the Lyoko Warriors, but also half of France, Ireland, England, the North Atlantic, and the English Channel, and the participents of the NATO North Atlantic War Games. The Warriors must reveal their secret and destroy Xana with NATO at their side. The Battle For Humankind Begins At Sea.