The animated worlds of the Teenage Mutant Ninja Turtles Nickelodeon cartoon and Batman: The Animated Series collide in this outstanding miniseries featuring villains and allies from both universes!In this new edition of the 2017 series, villains start to mysteriously escape Arkham and Batman seeks to track them down, but he discovers that they have left Gotham completely... and gone to the New York City of the Teenage Mutant Ninja Turtles!