The movie version of Endre Fejes' short story is based on a case that happened in the early 1960s. A psychopathic working-class boy changes his identity for a few days on his hard-earned money. He pretends to be a Greek diplomat, pays for luxurious dinners, courts elegant women, and of course, always disappears before the engagement. But he falls in love with the beautiful Zsuzsa Christmas and can't leave her in time.
Examining magistrate Sévigné wants to make a career in Paris, mainly at the urging of his wife. She is assigned to investigate a murder case, the victim was a maid, the accused was the maid. The examining magistrate, against his orders, believes in her innocence and starts a thorough investigation. The interrogations reveal who the real murderer is.
