Guillaume Canet is told by a young co-star that he's no longer Rock'n Roll and can't sell films anymore. He then tries to prove her wrong and gets help from his girlfriend, Marion Cotillard.

This is the story of three men in their 40s, confronted with their limits and three younger women who are usurping the old order. They are all gathered under the sun in Ardèche to shoot a film that will not happen.