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.
A husband, exasperated by his wife, spanks her without paying attention to the open window in front of which he is. He is annoyingly surprised to discover the next day that the scene has been photographed by a neighbor, and that the image is circulating in Paris. A debate then ensues: is this an opportunity to call for revolt or a welcome manifestation of marital authority?