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.