The Czech thread in the case from the Vistula River prompts investigators from Warsaw to cooperate more closely with the Prague police. Commissioner Viktor Seifert determines that the mutilated dead girl found on the Polish highway is a young Czech woman, Vera Vitova. At the same time, a series of gruesome events take place in Odessa: a woman’s arm is found in the cold room of an exclusive restaurant, and after a nighttime robbery on a local influential lawyer, investigators find a severed human head …