Paris, France. Fred and his colleagues, members of the BPM, the Police Child Protection Unit, dedicated to pursuing all sorts of offenses committed against the weakest, must endure the scrutiny of Melissa, a photographer commissioned to graphically document the daily routine of the team.

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.