Freelance translator Justine lives a quiet life in Paris with her husband and two children. But on an ordinary Wednesday afternoon, the unthinkable happens. Her son Malcolm is run over at a crosswalk on his way home from school and the perpetrator flees the scene of the accident in his suede-colored Mercedes. While the son sinks deeper and deeper into a coma, the police investigation seems to stall. Justine then decides to start her own investigations and try to track down the culprit. How can you run over a child and just drive away? She must learn the truth - at any cost.