Since the day the walls of Ba Sing Se fell, the Freedom Fighters have struggled to protect what remains of the city and its people. Jet and his second command, a mysterious boy named Li, have spent the summer piecing together an army, hoping for a chance to take the city back for good. But Li is also Zuko, and the time for that secret is quickly running out. Soon, he'll have to decide exactly who he is, what cause he's going to fight for and where his heart lies.