When Françoise introduced her fiancé to her parents, she had no idea that, during this family weekend, drama would enter this sumptuous estate, set up by her father for his second wife, the troubling Irène; so troubling, in fact, that she immediately set about conquering her daughter-in-law's fiancé... This doesn't faze her husband, Paul Brémont, the famous builder of Télébremont television sets, who is busy with his business and, above all, with the charms of his secretary. But it does seem to worry the house gardener, who is more than a little attached to his seductive boss (which makes Rose, the cook, sick with jealousy).

Une enquête policière compliquée se déroule après le meurtre d'un jeune homme, Jean-Luc, dans la maison de ses futurs beaux-parents, les Brémont.