An operative of the department for combating organized crime, Captain Stanislav Dmitriev participates in a complex operation of the main department of the criminal investigation department of the Ministry of Internal Affairs to eliminate drug trafficking in the northern capital and works undercover in the gang of crime boss Grachev, nicknamed Grach. The main "horse" of the gang is the drug trade. The legend of Stas is 100% reliable and allows him to enter the inner circle of the "Grachev" people. The work is already nearing completion - the operatives are preparing to take them red-handed. But on the way to the deal, an unknown person calls Grachev and informs him that police officers are already waiting for him on the spot and that one of his people is an embedded operator.