The story unfolds in Paris amid mass protests. During clashes, police seriously injure a sixteen-year-old teenager. Stéphanie, an officer from the national police inspectorate, takes on the investigation. She faces a wall of silence and pressure from colleagues trying to cover up the truth. The details of the case turn out to be extremely complex, and witness testimonies contradict each other. Safia must make a difficult choice between professional duty and loyalty to the system.