When Kai discovers a new menace in the ninja's own home and no one believes him, he begins to stay up late and keep the Tattle Tail from hurting his friends while putting himself in danger. Kai is given a note every day to complete the tasks at hand while remaining alive and not mangled by a six foot eight overprotective mother banned toy. Will he fall victim to the banned product? Will his friends find out in time to save him from this fate?