When Bruce Wayne disappears mysteriously, his sidekicks, Nightwing and Robin, team up to patrol Gotham City. Meanwhile, Batwoman investigates his disappearance. As they delve deeper, they uncover a sinister plot orchestrated by the League of Assassins, led by the enigmatic Talia al Ghul. With Gotham's safety at stake, alliances are tested, and secrets are revealed in this thrilling animated adventure.