Smeralda Amadier, a retired singer, lives in an isolated villa with her secretary Marcella and her lover Didier (but throws out the latter after catching him with another woman). Smeralda has huge debts and when creditors threaten her with bankruptcy she decides to sell her valuable jewels. That evening, she meets Costas, a handsome young man who seduces her. Next morning, there is no sign of him or the jewels. He was apparently a penniless gigolo, but who was his secret partner in the theft?

Female American tourists are being kidnapped by a crime ring headed by a beautiful Asian woman. They're drugged and then sent to an island where they are kept as sex slaves to be used by wealthy tourists. Two agents are dispatched to rescue the women and put an end to this operation.

Two rivals are out to recover a cache of stolen jewels. The thief who originally stole them has just gotten out of prison, however, and he is looking for his twin brother, who knows where the jewels are hidden. Complications ensue.