After the events in Nantes, Captain Téva Royer meets Special Commander Oriane Girard. He now accompanies her in the unusual and mysterious cases she is tasked with solving. Their first crime scene stirs up painful memories in the small village of Saint-Avène. One year after a tragic bus accident that claimed the lives of four local children, a car ends up in the same spot, in the same ravine. The driver, Amalia, who died instantly, is none other than the bus driver's sister. Téva and Oriane know they are responding to an inexplicable crime scene. It was neither a technical defect, nor suicide, nor driving error, and certainly not malicious intent that led to this accident...