Mr. Freeze is living in the arctic with his cryogenically-frozen wife. When a submarine destroys her containment capsule, he has to find someone to "donate" a new heart for her. His search turns up one donor with the right blood type: Barbara (Batgirl) Gordon. Her kidnapping sends Batman and Robin on a hurried chase to free her in time.When Mr. Freeze, desperate to save his dying wife, kidnaps Barbara Gordon (Batgirl) as an involuntary organ donor, Batman and Robin must find her before the operation can begin.