Someone has broken into Arkham Asylum hunting down all the supervillains locked up there, and Batman's life has just become more complicated because Gotham City's new mayor is the Penguin, and he has declared Batman an outlaw.

The Joker is a reformed character and in love, but his girlfriend, Harley Quinn, is not pleased with the change and decides that a flirtation with Batman will turn him back into the maniac she wants.

Batman and Robin face off against some of Gotham's most iconic foes, including the Joker and Poison Ivy.