Cesare Celli (De Sica) is an Italian gangster that was formerly active in the States but is now retired in his homeland of Italy. One day he is kidnapped by the gang of Harry Price (Wagner). The plan runs into a dead-end, however, whey the gang discovers that not only Cesare is flat broke, but that none of Cesare's friends or associates is willing to pay a ransom to get him back. Offended at the realization, Cesare offers to assist Harry and his swinging girlfriend Juliana (Welch) in pulling off a heist of $5 million's worth of platinum ingots, bringing in criminal mastermind Professor Samuels (Robinson) to run the operation.
This film features examples of:
- The Caper: When Cesare's kidnapping fails because none of Cesare's friends or associates is willing to pay a ransom to get him back, Cesare offers to organize a heist with Harry's crew.
- Gentleman Thief: The Italian gangster Cesare carries himself with a suave and debonair manner.
- Ms. Fanservice: Juliana (none other than Raquel Welch) finds herself into bikinis and revealing dresses a lot.
- One Last Job: Cesare decides to do the heist as one both because he is broke and because he's insulted at nobody being willing to pay a ransom to get him back when he's kidnapped.
- "Shaggy Dog" Story: They succeed, but they lose their loot when the doors of the bomber plane used to transport the platinum ingots open unexpectedly and it falls out.
- Train Job: The plan Cesare proposes to Harry's gang is to rob a train carrying $5 million's worth of platinum ingots.