The film takes place in Paris, where two cops are competing for the vacant seat of chief of police while in the middle of a search for a gang of violent thieves. The movie is directed by Olivier Marchal, a former police officer who spent 12 years with the French police before creating this story, which is taken in part from real facts that happened during the 1980s in France.

In Paris, many citizens go to the precinct after the doors of their apartments have been sprayed with a 4 and the letters "clt". When a dweller is found mysteriously dead in his apartment, Detective Jean-Baptiste Adamsberg and his partner Danglard investigate...

Alex and Laetitia appear to make the perfect couple. But, as much as he loves his gorgeous fun-loving sweetheart, Alex isn’t yet ready for her to move in with him. Laetitia has other ideas. She has already packed her bags and lets Alex know that she will be taking up residence in his apartment within a few hours. For Alex, this is his worst nightmare come true. In desperation, he persuades his best friend to simulate an attack of depression so that he can move in with him...