Gotham City is under siege by a series of bizarre crimes and only the world's greatest detective, Batman, can unravel the mystery! The trail leads to none other than the Penguin and his Animilitia, an animal-inspired squad of villains including Silverback, Cheetah, Killer Croc and the monstrous Man-Bat.

Batman, Lieutenant Gordon and District Attorney Harvey Dent go up against the Joker, a criminal mastermind in ghoulish makeup terrorizing Gotham City.