In the small bordertown of Villefranche, lost in the heart of a large forest, crime rate is six times higher than elsewhere in the area. Each new crime Major Laurène Weiss solves with the help of her unusual team makes her sink deeper and deeper into secrets of the area.

Four teenagers' lives are turned upside down when a mysterious event propels them into parallel dimensions.

An examination of the terrible true events of December 5, 1986, that led to the death of a young student, Malik Oussekine. Centred on his family’s fight for justice, the series explores the enormous impact this high-profile case had on French society.