The back alleys of a peculiar mountain town hide dark secrets and hushed conspiracies. When a ruthless killer defends abused children, experienced criminologist Teresa Battaglia leads a team in the investigation, while dealing with the first signs of Alzheimer's disease. Meanwhile, young inspector Massimo Marini joins the team, fleeing his own past. Against the backdrop of the Friulian Dolomites, Teresa faces a killer and her own inner demons in a thrilling battle for truth and survival.