A comedic instruction manual for the middle-aged crisis, which will show how from the "mediocre" to become a rock'n'roll heart conqueror. The film stars Marion Cotillard ("Midnight in Paris") and Guillaume Canet ("Heavenly Beach") - real life partners in the role of a movie couple! Also featured on screen are Gilles Lellouche ("Unbelievers") and Ben Foster ("Inferno").

When a beautiful young girl says that you are no longer in the "let's go to bed" list of any woman, it means time for: a) a slow retirement, b) choosing a gravestone, c) radical change of life and image! Guillaume, a popular 40-year-old actor, has heard exactly what he has heard from his 20-year-old colleague "after the job." Initially depressed, he soon decides to make drastic changes. Is a settled man, with a beautiful wife (Marion Cotillard), a few years old child and a passion for riding in a picturesque French countryside, able to work out the image of a party of rebels to fight the fans? The transformation that awaits him will soon break out of control and surpass the wildest expectations of all.