The seedy underbelly of Vienna at night. Mercedes is a femme fatale from Mexico, newly arrived at the Vienna airport with her German boyfriend Rainer, where they have smuggled a kilo of cocaine through customs. Unfortunately for them, the city has just had a major drug crackdown, leaving them without buyers and money. Disgusted with Rainer, Mercedes ditches him and hooks up with Harry, a lonely and bored cab driver who agrees to help her find a buyer for the drugs so she can get some cash and go home. She offers Harry a deal he can't refuse. Is he just another pawn for Mercedes or will her promises help him achieve his hope and dreams? The story careens through the night streets of Vienna, following two amateurs navigating their way through the treacherous world of the drug trade. It's a mood piece with the backdrop of a stifling urban loneliness.

In the snowy mountains, on a boundary stone between Germany and Austria, lies a strangely staged corpse. Both countries send investigators: the young Ellie Stocker from Berchtesgaden and Gedeon Winter from the Salzburg Kripo. Highly motivated, Stocker takes on her first big case, while Winter, a disillusioned cynic, would prefer to shift the investigation entirely to his German colleague. Interpersonal tensions are inevitable but the two must cooperate because there are more murders and they bear the same signature. It quickly becomes clear that a serial killer is at work. After the description of a surviving victim, a phantom drawing of the perpetrator is created. It shows the devilish grimace of a Krampus, one of those fearsome companions of Saint Nicholas who punish naughty children. Could the killer be on a mission?