In a small village, xenophobic sentiment spreads against an innocent family after the village mascot, a wild dog, is beaten to death.

The body of a teenage girl is found in the forest near the rural village of Manscheid, deep in the North of Luxembourg. Luc Capitani, a gruff detective from the South of the country, is put in charge of the case. Having trouble navigating the closed, communal and protective mentality of the northerners, Capitani finds himself unwillingly dependent on the help of Elsa Ley, a young and intrepid local policewoman. The officers quickly find themselves entangled in a web of secrets and lies.

In early 18th century an African slave boy is chosen by a European Comtesse to be baptized and educated. Reaching adulthood, Angelo achieves prominence and soon becomes the Viennese court mascot until he decides to secretly marry a white woman.

In February 1945, Jules Ternes returns to Luxembourg. To escape conscription, he fled the country and joined the resistance movement in France. Back in his hometown, Jules hopes to find peace of mind and put the war behind him. But he returns to a country devastated by the Battle of the Bulge and deeply divided from four years of occupation. His sister Mathilde is now engaged to Armand, the leader of the local resistance and his girlfriend Leonie has another man in her life. Jules nevertheless resumes a relationship with her and accepts a post as an auxiliary policeman. When Leonie is assassinated along with the German farmers she works for, the life Jules was struggling to rebuild collapses. The ensuing investigation will reveal grey areas of the Occupation along with the efforts made in high places to cover them up.

An American man unwittingly gets involved with werewolves who have developed a serum allowing them to transform at will.