 A mysterious figure robs a Gotham City bank on the same date each year. Batman and Robin are summoned to help the police solve the crime. To flush out the robber, Batman plants a false story in the newspaper that the money taken was counterfeit and being held by the bank for disposal. It turns out the robber is none other than magician Zelda the Great. She needs the money to pay a "mad Albanian genius" to come up with escape tricks for her act. Now, Zelda has to commit another crime and Batman sets a trap. But Zelda pulls a switch and kidnaps Harriet Cooper instead. If a ransom isn t paid, Aunt Harriet will be dropped in boiling oil.