Lieutenant Colonel Artem Malakhov was appointed head of the internal affairs department in a small Volga town. This place has a bad reputation: three of Artyom’s predecessors were killed one after another. And on the very first day he himself witnessed a terrible crime: the corpse of a strangled black caviar merchant was caught from the river. Perhaps these atrocities are the work of local authorities, whose names are known to law enforcement agencies... It is also possible that the sister of one of the bandits, Eva, is involved in the case. New murders that happened soon force Malakhov to hurry. He decides to get to know the fatal beauty better...