From the liner notes

Vintner Henri Marcoux (Jacques Dacqmine) brazenly carries on an affair with a beautiful young neighbor (Antonella Lualdi) right under the nose of his bitter wife Thérèse (Madeleine Robinson). Henri’s gorgeous daughter has herself caught the eye of a Hungarian ne’er do well (Jean-Paul Belmondo), while Henri’s voyeur son begins to take liberties with his father’s mistress. As the family’s passions ripen, the stage is set for tragedy.