A sixteen-year-old girl has been reported missing from her village in the Ardennes. With the help of a lonely and mysterious woman, Capt. Gaspard Decker and local cop Virginie Musso are tasked to locate her.
Following a violent explosion involving two boats in the south of France, a mother attempts to figure out what happened to her son and how the body of her long estranged sister ended up on the beach.