After Jay, Cole, Zane, and Kai defeated Lord Garmadon once and for all, the skeletal baddie actually joined the good guys! Garmadon and his son Lloyd are reunited, and the new powerful team, led by Sensei Wu, is totally unstoppable . . . unless they have to face one of their own. Before Garmadon turned, he had placed terrible doomsday devices all over Ninjago, timed to activate in the event of his defeat. Now he must lead the ninjas in a quest around the world to battle these maniacal menaces, and hope that their first mission together isn’t their last!