The fierce and merciless battle of three forty-somethings who live together and want to seduce their pretty stewardess neighbor at all costs. A competition full of pitiful and feverish seduction acts. Redoing one's life at forty-five is not easy and becomes an absolute emergency. But does the stewardess really have the vocation to save the "Masculins 45"?

Frédérique Letheil, who heads the research department of the Emmerson oil group, has sacrificed her private and sentimental life to her experiments. The management, which sees her work as a financial drain, has her unjustly dismissed by the group's general manager, Maxime Vergnaud. When the company realizes its mistake and the economic and ecological potential of Frédérique's research, it asks Maxime to bring her back at all costs.

At age 24, Rémi Bonnet, brilliant pianist, abandons Chopin and Toulouse to play the music he has secretly loved for years - Salsa! He heads for Paris, the salsa capital of Europe, only to discover to his great surprise, that nobody wants a white boy in Latin band! Felipe, his Cuban friend, sets him straight: " You don't have the Latino look, muchacho! Today, if your are not Cubano or Columbiano, you are out!". Undaunted, Rémi deliberately takes on the identity, accent and complexion of an unemployed alien in a city where most foreigners will do almost anything to become French. Barreto, 75, the legendary Cuban composer, who is about to close down the once famous Casa Cubana, offers Rémi a job giving dance lessons to the locals. It is here that Rémi falls in love with Nathalie. Her family's "secrets and lies" reveal parental links to Barreto. Do these links explain why this shy beauty ought to be a bomb on the dance floor?

In order to make a good impression on her new boss at a work party, Léa Faber, a young single woman devoted to her job, leads everyone to believe that she is married to Yann, the pianist at the party whom she has just met. He decides to play along.