Interpol Inspector Zenigata begins a world-wide hunt for the infamous thief Lupin The 3rd. But together, they face a powerful enemy and form the Lupin team in response. The Lupin team then faces the challenge of retrieving the “Crimson Heart of Cleopatra” locked away in a fort like safe. The treasure is thought to allow its owner to control the world.

After a successful robbery leaves famed thief Lupin III and his partner Jigen with nothing but a large amount of fake money, the so called “Goat Bills”, he decides to track down the counterfeiter responsible – and steal any other treasures he may find in the Castle of Cagliostro, including the ‘damsel in distress’ he finds imprisoned there.

Based on the successful 1956 Broadway production of the same name by Betty Comden, Adolph Green, and Jule Styne, the film focuses on Ella Peterson, who works in the basement office of Susanswerphone, a telephone answering service. Peterson, based on Mary Printz, who worked at Green’s service, listens in on others’ lives and adds some interest to her own humdrum existence by adopting different identities for her clients. They include an out-of-work Method actor, a dentist with musical yearnings, and in particular playwright Jeffrey Moss, who is suffering from writer’s block and desperately needs a muse.