A man vacationing in the country with his wife and children finds ideas he has of himself unexpectedly challenged.

The film's title is a pun, the double meaning referencing both the "wrong genre" and a person with distasteful motives. Insecure novelist Martial Bok promotes his new sexy novel La Fille de Dos ("Girl Observed From the Rear") with a round of book-signings and talk-shows. When beautiful hat designer Camille buys the book, Martial follows her and spies on her as she reads his book and removes her clothing. It's the beginning of his obsession and also an inspiration. After Martial's live-in girlfriend Lucie establishes contact with Camille for real, Martial is able to type out another sexy manuscript.

Lepetit, an ambitious and determined man, is named the new CEO of a department store. His mission is to improve the store's financial position. He decides that the human factor will be his catchword and introduces new methods, which he also applied to himself. But tensions slowly arise between members of the staff.