The Bontemps family, like all the inhabitants of the village of Coussy la Chapelle, are passionate about radio. Coco, the fiancé of Jacqueline Bontemps, participates in all the contests and under the name of Mr. Bontemps wins a beautiful Sunday. All arrive in Paris and in the premises of the Parisian Post Office attend popular broadcasts.
| Actor | Role |
|---|---|
 Marguerite MorenoSelf | Self |
 Armand BernardMr. Bontemps | Mr. Bontemps |
 Grégoire AslanRobert | Robert |
 Mady BerryMrs. Bontemps | Mrs. Bontemps |
| BBalderSelf | Self |
| GGeorges BriquetSelf | Self |
 Albert BroquinThe butcher | The butcher |
 Robert BurnierSelf | Self |
| GGéo CharleySelf | Self |
 Pierre DacSelf | Self |
 Claude DauphinSelf | Self |
 Yves DeniaudThe postman | The postman |
 Rosine DeréanSelf | Self |
| RRené DorinSelf | Self |
| JJacqueline DumonceauJacqueline | Jacqueline |
| JJacqueline EvrardThe singer | The singer |
 Anthony GildèsThe grand father | The grand father |
 Fabien LorisDuettist | Duettist |
 Blanche MontelSelf | Self |
 René NavarreThe secretary | The secretary |
 Jean NohainSelf | Self |
 Frédéric O'BradySelf | Self |
 Georges PaulaisThe witness | The witness |
| MMaurice PierratSelf | Self |
| FFrançoise PomelSelf | Self |
| GGeo PomelSelf | Self |
 Marcel PérèsThe clerk | The clerk |
 Fernand RauzénaSelf | Self |
| JJean RieuxSelf | Self |
 Raymond SouplexSelf | Self |