Jacqueline Vignolle fills her father with despair: she has just broken up with her… fourteenth fiancé! In order to humor Daddy, the young lady decides to marry someone. The trouble is that Albert Letournel, the future husband, is in his fifties and, as can be guessed, the marriage will be of convenience, nothing else. Another difficulty lies in the fact that Albert has a son, Georges, who automatically becomes her stepson. Although the relationships between the two young persons are tense at the beginning, you can easily guess what happens in the end…!