Nikita Vetrov is a young and charming criminal investigation operative. Dangerous work brings a special, almost sweet poignancy to his life, and then a fresh relationship with a beautiful girl is about to give his routine a new shine... And everything would be fine if another murder did not lead the hero and his colleagues into the very crater of the terrible crimes. The attacker is unknown, and Vetrov was almost able to grasp the long-awaited solution, but the real answers turned out to be more monstrous than even the wildest assumptions.