Three completely different women — the cold heartbreaker Anfisa, the airy intellectual Sofia and the life—loving mother of three children Milena - establish an agency to expose unfaithful husbands in infidelity, because it is not difficult for them to get anyone into bed using psychological manipulations and techniques.

The country is gradually moving away from the 90s, life is getting better and people are again attracted to the Black Sea resorts, where travelers along the way become victims of brutal murderers. In the pursuit of profit, they spare no one: neither women, nor the elderly, nor children. All attempts to get on the trail of criminals end in nothing and there is not a single serious clue in the case. At the same time, Vitaly Vitvitsky and his pregnant wife Irina Ovsyannikova go on vacation to the Crimea and themselves fall into the clutches of criminals, who turn out to be members of the "Amazon Gang", led by a certain Smallpox.

On a college trip to remote Northern forests, one of the students - Marina - encounters a burial site of an ancient witch, and is possessed by the spirits of the past. Now Marina and her companions must take part in the millennia old fight between good and evil, involving lake witches, sorcerers, and ancient forces from the myths.