Since the day their mother Aline remarried, Patrice and Eric, a joyful pair of twins, have been very happy. Indeed, François Chantour, their stepfather, is very kind and behaves like a big brother to them. Even if they are not very rich, the four of them live a cheerful life in their charming house. The trouble is that, in Lyon, the family on the boys'father's side are worried, especially the twins' grandmother, who fears Patrice and Eric are given a bad education. She therefore brings them to her big house in the hope of their improving their manners. A very unfortunate decision indeed.
| Actor | Role |
|---|---|
 Sophie DesmaretsAline Chantour | Aline Chantour |
 Philippe ClayThe Butler Barns | The Butler Barns |
 Gabrielle DorziatMadame Marcevault | Madame Marcevault |
| MMary MarquetThe Flying Grandmother | The Flying Grandmother |
| JJoël FlateauÉric aka 'L'Haricot' | Éric aka 'L'Haricot' |
| YYves NoëlPatrice aka 'Patachou' | Patrice aka 'Patachou' |
 Jacques MorelJérôme Dandaine | Jérôme Dandaine |
 Georgette AnysMariette | Mariette |
 Christian AlersFrançois Chantour | François Chantour |
 Alexandre RignaultFather Panegras | Father Panegras |
 Jean DavyTorques | Torques |
 Catherine FonteneyMadame de Saint-On | Madame de Saint-On |
 Denis d'InèsGaëtan du Chastelet | Gaëtan du Chastelet |
 Dominique BlancharAnny Volland | Anny Volland |
 France AsselinManu Torques | Manu Torques |
 France DelahalleChantal Marcevault | Chantal Marcevault |
 Paulette ArnouxAmbroisine | Ambroisine |
| SSandrineThe pastry chef | The pastry chef |
 Jacques MarinThe inspector | The inspector |
 Charles LemontierNot listed | Not listed |
 Robert BlomeNot listed | Not listed |
 René BergeronNot listed | Not listed |
| FFrançoise AlbanNot listed | Not listed |