The federal police are investigating Russian arms dealers who, as alleged manufacturers of agricultural machinery, have built up a perfect entrepreneurial facade. Julia Grosz, who has just been promoted to Chief Inspector, is in charge of the operation. When the undercover investigator dies shortly before the mafia-like structures are uncovered, the whole operation seems to have failed. But the arms dealer Timofeev has a niece, Marija, who works for the LKAworks and distanced herself from her family years ago. In order to prevent the campaign from failing completely, Grosz tries to position Marija against her own family. Falke, who used to be Marija's supervisor at the LKA, is not enthusiastic. The thing seems too dangerous and uncontrollable. But Marija agrees to Grosz's suggestion and begins a double game of life and death.