Ariane (Sophie Marceau) and her husband Hugo (Dany Boon) have been married for ten years. Although the passion at the beginning is still there, it has to be dispersed by the tedious daily affairs. Hugo runs around for the company's affairs every day, while Ariane has to be a housewife and pull two children while taking care of the jewelry business run in partnership with friends. She is busy all day. The complaints and frictions between the couple are also increasing. Seeing that they are in conflict with each other, Ariane decides to save this marriage. She comes up with a seemingly absurd method-the two exchange identities and experience each other's life for a year. In this way, Ariane becomes a company executive, and her husband Hugo begins to revolve around children and jewelry. After a difficult adaptation period with many embarrassing things, the two gradually begin to understand the difficulties of each other's position. However, just when their feelings for each other are gradually being repaired by endless jokes, the police unexpectedly come to the door... This film is adapted from the novel of the same name by contemporary French writer Alex Guihod.