Two-Face, the former Harvey Dent, begins an aggressive campaign against his hated rival, Rupert Thorne.

After learning the name of an extortion ringleader, Batman mysteriously refuses to let Robin continue the investigation with him.

Despite Batman's orders not to, Robin pursues Tony Zucco, the criminal who was responsible for the death of Robin's parents.

Batman and Robin investigate a string of crimes committed by a group of famous comedians brainwashed by the Joker.