A certain Mitrokhin declares to Gloria that his business partner wants to get rid of him. He reports the time and place of the planned assassination attempt and offers detective Pletnev a good fee if he agrees to help. And Alexander Borisovich Turetsky is approached by a wealthy businessman from the Siberian town of Lebedyansk. His daughter, a local theater actress, disappeared. A businessman asks Turetsky to help him find his daughter. However, Alexander Borisovich will not have to choose. Indeed, from this moment on, the life of the missing actress is closely connected with the life of his wife, Irina. To cut the devil's knot and save his wife from death, Alexander Borisovich goes to Lebedyansk, where he finds himself in the center of mysterious and ominous events.