Book2 of Code Lyoko: Season Five. Xana has escaped yet again, and has formed an alliance with "Droid-Master" The lyoko warriors must find away to defeat Xana and Droid-Master before they take over the world. Only they have a hostage, and it's someone who means a lot to Aelita. Will they succeed or will they be captured as well? The only way to find out is to read this story "of unforgettable adventure filled with heroism and danger" -Odd Della Robia