Волшебный участок - All Seasons

Lech, a former police sniper with PTSD, learns about Katya's fatal illness in the midst of an alcoholic binge. Katya does not want her daughter to be sent to an orphanage after her death, and asks Lech to take up his head so that he can become a guardian for an eight-year-old girl. Lech has already lost many close people in his life, so he does everything to help his sister: picks up old connections and gets a job at the police station.
The site turns out to be difficult. The criminals that Lech must catch are fairy–tale characters: Snake Gorynych, Baba Yaga and other evil spirits. And if the former sniper has no problems catching villains, then trying to become a good guardian becomes a real challenge for Lehi.

Lech, along with the SSU team, attack Koshchei's trail and travel to St. Petersburg, where they will have to solve many fabulous mysteries, investigate local crimes, find Vasilisa and face an incredible force that can destroy the whole world.…

Evil spirits live in the city on the Neva River no less than on the banks of the Moskva River, therefore, the Mistress of the copper mountain, Danila the master, Cupid, Yemelyanov the fisherman, Rusalka, Golem, Serega the Mushroom from Ryazan, Fireball, Trolls, as well as a whole crowd of local dwarfs were added to the already familiar fairy-tale characters.