Both Joker and Penguin escape from Arkam Asylum in pursuit of huge stash of mob treasure. Instead of treasure, they accidently unleash the original creature of the night upon Gotham City--Count Dracula. The king of vampires begins snatching Gotham's citizens to turn them into his undead slaves. Since the disappearances appear to be at the hand of a "giant bat", Gotham believes the city's shadowy crusader, Batman, who must be the culprit. Now Batman must find a way to stop Dracula, and return his victims to the land of the living...