Paris at the Belle Epoque. Monsieur de Pontagnac, a perfect honest man, loves pretty women too much and that plays him many tricks. What need does he have to follow the pretty Lucienne Vatelin, home, to find himself in the presence of the husband, the notary Vatelin, who is part of his circle? From there, many characters will meet, avoid each other, find each other. Adultery, domestic scenes and reconciliation will be their lot.