Summary:

A wealthy man, Orestes, is pathologically jealous of his young beautiful wife and constantly suspects that some strange mustached men are lurking outside their home for her.

On the other hand, his maid, Toula, is having a secret affair with a mustached taxi driver. The maid, the taxi driver, the jealous husband, a neighbor who has borrowed his wife's clothes, and her fiancé all end up at a café outside Athens, leading to a wild entanglement of misunderstandings that drives the husband to the conclusion that his wife is cheating on him.