In the shock of a separation, Louis decides to question his relations with his exe, Isabelle, and with the other women of his life. The worst thing is that they all want to stay her friends. His friends and colleagues tell him he's too nice, he's not normal. Robert, a musician friend, suggests that he undertake a small exercise program: "How to become an asshole and finally please women". In parallel, Louis tries to advance his musical projects.

Micheline Bertier is as wise as she is graceful, and is the perfect assistant to her boss, couturier Maurice Darnal. Darnal's business is faltering and he has to close down. Micheline's family is also in trouble. Her crazy-headed sister is about to steal her fiancé away from her. At the suggestion of singer Jacqueline François, Micheline goes on tour as an accompanist, and meets up with Darnal in Nice, full of projects he wants to involve her in. Micheline, who arrives in time to save her sister from a suicide attempt, will know how to run the new fashion house.