Batman must battle former district attorney Harvey Dent, who is now Two-Face and Edward Nygma, The Riddler with help from an amorous psychologist and a young circus acrobat who becomes his sidekick, Robin.

While Batman deals with a deformed man calling himself the Penguin wreaking havoc across Gotham with the help of a cruel businessman, a female employee of the latter becomes the Catwoman with her own vendetta.