Yvon Rance, who runs a hair salon in Brittany, only wants his beloved teenaged daughter Laetita to be happy, something he believes she'll be able to achieve by completing high school and then following in her father's professional footsteps. When Laetita tells him that she has been cast in the latest movie by renowned director Stephane, he is initially unimpressed. He grudgingly relents when he learns that the money she will make for a couple months of work is twice what he makes in a year.
Two ex-convicts, MG and Gilbert find refuge in a charming middle-class house whose couple is about to celebrate its 20-year old marriage. Our duo has no other solution than to take this entire brood in hostage. But, contrary to all expectations, they are warmly greeted by the occupants who don't think twice before helping them, they are even ready to put their guests off, even to kill them if necessary...
Bois d'Enghien, engaged to a young girl from a good family, has to break up with Lucette Gautier, his mistress, a dilettante of salons. Not having been able to tell her of his break-up, he finds her at her fiancée's house, invited for the event. A Mexican general, jealous of his rivals, arrives and complicates the situation, as does a notary clerk, Bouzin, a singer in his spare time.
