Having recently moved into her new apartment, Irène Cazenave, the widow of a well-known police officer, is forced by one of her husband's colleagues to take part in an investigation. The building's provocative concierge has been found murdered. We watch a parade of suspects, only to learn at the end that Irène killed the janitor under blackmail. She kills herself.
In order to please Martineau, a wealthy industrialist, cynical Gabory accepts to organize a rigged beauty contest whose winner will be Françoise, Martineau's young mistress. However, there are other comely contestants among whom Christiane, the daughter of a general, Jackie, an unemployed actress, Colette, the daughter of a distiller and Marie, a secretary engaged to serious-minded construction foreman Robert. So, will things turn out exactly the way Martineau and Gabory want them...?
