Batman and Robin interrupt a robbery by members of Catwoman's old gang. Catwoman helps to capture the final crook and was responsible for tipping off Batman to the crime. When the Joker learns that Catwoman is helping the Dynamic Duo, he sets a trap to capture her. While Batman and Robin are fighting his gang, the Joker takes Catwoman prisoner. He then takes her to his hide-out. With the assistance of Dr. Moon, the Joker tries to turn Catwoman back into a criminal.