Madeleine Villardier is terribly superstitious, and she's in a lot of trouble for the New Year's Eve party she's planning. Inexorably, the number of guests is down to thirteen. To add to her dismay, the presence under her roof of a certain Consuelo is proving cumbersome, especially as this lady has revelations to make about Antoine Villardier's stormy past. The mistress of the house's trances alternate with marital explanations. But why not consider the fateful number as a lucky charm?

1947 film by Willy Rozier

A diverse group of friends gather to celebrate a witless woman's birthday in this comedy drama set in France during World War II. The guests include an uncle who is a Nazi collaborator, a blind war veteran, a simpering physician, an arrogant educator, a patriotic girl, and the husband of the guest of honor. When some German soldiers are killed outside the house, the group is told by the Gestapo that they must choose among themselves two who will be shot if the killer is not caught. If two victims are not chosen, all seven at the party will be captured. Things sound pretty grim, but the black comedy begins when all seven try to save themselves by any means possible.

Minne is a very imaginative young lady. She pretends to have had lovers and can't think of anything better to do other than... to tell Antoine, her husband, the day she marries him. Bad beginning for the couple... As the marriage is not consummated for years, Minne feels frustrated and tries to find elsewhere the carnal knowledge she does not find at home. But Antoine is a kind-hearted man and on the occasion of a trip, a sexual balance is at last found between the two partners.