The Catwoman manages to drug Robin. The junior member of the Dynamic Duo is now the Catwoman's mindless slave. Batman is on the trail of the sultry villain, but he's hampered by the fact he can't harm his partner. Eventually, Batman is trapped by the Catwoman. He's in a giant trap and Robin is cutting the rope that will cause a giant mouse trap to snap on Batman. The Catwoman offers Batman a choice -- die by Robin's hand or agree to be subjected to the same drug.

Batman agrees to let the Catwoman drug him. But he appears to have a headache and the Catwoman permits him to take an aspirin. After the drug is administered, Batman appears to assist Catwoman on her crime wave. However, the police receive anonymous telephone calls that enable them to pick up members of Catwoman's gang, including the drugged Robin. Meanwhile, the Gotham City police try to trace the hot line to the Batcave. Batman is there with Catwoman. He uses a device that foils the trace. Eventually, Batman reveals he hadn't taken an aspirin but his universal drug antidote that prevented the drug from working. Catwoman tries to flee on top of a warehouse near the Gotham River. Batman is in pursuit and corners her. But, unwilling to go straight, she falls into the river. Has she lost her life, or just one of her nine lives?