On his wedding day, Robert confesses his father-in-law that twenty years ago, he seduced a lady in a sleeping car of a train. His mother-in-law overhears the conversation and convinces Robert that she was that lady and that makes Robert's bride also his daughter. The wedding is in danger of being annulled when the trickery is finally discovered.
| Actor | Role |
|---|---|
 Armand BernardRobert de Mérinville | Robert de Mérinville |
 Alice TissotMrs. Monicourt | Mrs. Monicourt |
 Louis Baron filsPetit-Roncin | Petit-Roncin |
 Janine MerreyNicole | Nicole |
 Pierre StéphenPhilippe Thomery | Philippe Thomery |
 Ginette LeclercIsabelle, from the 'Folies Bergères' | Isabelle, from the 'Folies Bergères' |
 Charles LemontierFirmin | Firmin |
 Christiane DelyneCléopâtre Petit-Roncin | Cléopâtre Petit-Roncin |
 Pierre LarqueyAlfred Monicourt | Alfred Monicourt |