Who better to solve the most intricate crime than the criminal himself? At the initiative of the police colonel Stadnyk, a department for the investigation of the most complex crimes was formed in the department entrusted to him. The new team includes those who once fell into the mill of a punitive machine and got behind bars. The department is headed by Yegor Polyakov, a former special forces officer who was "written off" for robbing a bank. Investigator Olga Sytnytska was imprisoned for the murder of a sadistic maniac, and a specialist with external manifestations Maksym Luzhyn found himself on the bunk due to the efforts of an influential corrupt official.