Martin Morel wants to spend Sylvester with both his wife and family and his girlfriend Agnes. So he asks his clumsy friend Bertin to pretend she'd be his wife. But the two can't stand each other... at first.
| Actor | Role |
|---|---|
 Jean PoiretMartin Morel | Martin Morel |
 Jacques VilleretGuillaume Bertin | Guillaume Bertin |
 Agnès BlanchotAgnès | Agnès |
 Éva DarlanBéatrice | Béatrice |
 Jacques SereysBenoît | Benoît |
 Catherine HiegelOdile | Odile |
 Catherine ArditiAnne-Sophie | Anne-Sophie |
 Jacques BoudetCharles | Charles |