Jacky Valens used to be an amateur racing cyclist. But he was arrested for taking drugs. Now, aged 38, he is back in his native town in the North of France, after four years in prison and three recovery treatments. Welcomed like the prodigal son, he agrees to train the local cyclist racing team. In this context, he gets to know a gifted young racer, Ludo, who he discovers is his own son he never recognized. He also draws closer to Marie, his former love and Ludo's mother...