After capturing the feared Sinister Eight, Commissioner Gordon asks the Dynamic Duo to deliver the crooks by radio-controlled ship to their prison at Satan's Island. The ship is torpedoed and sunk during a storm at sea by the Sinister Eight's minions, and all are washed ashore on an island, where Batman and Robin have to avoid capture by the villains before they can capture them.; Batman becomes a member of the strange "Death Cheaters Club," but a wanted criminal, who fits the qualifications for membership, is denied the same --- and vows vengeance against all the members!