A teenage girl's body was discovered in a forest near the rural village of Manscheid in Luxembourg's far north. The case is assigned to Luc Capitani, a gruff detective from the country's south. Capitani, who is having difficulty navigating the northerners' closed, communal, and protective mentality, finds himself unwillingly reliant on the assistance of Elsa Ley, a young and intrepid local policewoman. The officers quickly become entangled in a web of lies and secrets.