The general director of the construction materials plant, Sofronov, has lost his seventeen-year-old granddaughter Tanya. He turns to police officer Nikolai Sokolov on recommendation. Now he is on vacation and temporarily removed from the staff, so he can only deal with the matter privately. It turned out that the director had been receiving threatening notes for a long time, and all of them were related to the corporatization of the plant. He is sure that this is the work of the raiders. Indeed, Sokolov finds Tanya in the company of bikers. Is the case over? Not so! Something begins that even an experienced police officer could not expect...