When a teenager suddenly disappears without a trace, the case is assigned to an alcoholic police officer who maintains a complicated relationship with his own troubled teenage son, suspected of drug trafficking.

Paris, in the early 1990s: a group of young activists is desperately tied to finding the cure against an unknown lethal disease. They target the pharmaceutical labs that are retaining potential cures, and multiply direct actions, with the hope of saving their lives as well as the ones of future generations.

A female police commander from the city and a male gendarme captain from the sticks join forces to solve the murder of Vincent who was found dead at the Sarlat castle ruins. Vincent just happens to be the son of the richest local businessman! The the two cops investigating once had a fling togther at a music festival.The murder investigation is the first time they've seen each other since.