Activités Cinégraphiques et Cinephonic

Gabriel Pelletier, sales manager for a major industrial firm, would be the happiest of men if he didn't have a family of rare originality. The day Gabriel Pelletier is asked by the firm's management to welcome and accommodate an important American industrialist who has come to Paris to handle a major contract, he realizes the difficulties that lie ahead. How will Mr. Strumberger, who has the reputation of a fierce puritan, react to the behavior of the various members of the family?

Lucille, a paralyzed girl, is the scapegoat of her sister and her cousin Josine and Elisa. During a "game" that goes too far, they accidentally kill the lover of Elisa. Whilst attempting to make Lucille bear the guilt of the killing, they discover the frightful secret that would explain the vegetative state of Lucille.