The animated worlds of the current Teenage Mutant Ninja Turtles Nickelodeon cartoon and Batman: The Animated Series collide in this outstanding mini-series featuring fan-favorite characters from both universes! 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! Collects issues #1-6!