[4][5] The show tells the story of new governmental body created in MVD to solve X files and high crimes cases.

FES (Russian: "Федеральная экспертная служба") is Federal Expert Service, bringing together specialists in various areas: software development, ballistics, forensic and investigators.

Launched as an experiment, FES trains young professionals and it assists to other special organizations as FSB and MVDs branches in solving crimes.

[6] There was number of cases when Russian citizens complained to FES, because they were not aware that the organization shown in the TV-series was fictional.

Press Service of the Ministry of Internal Affairs for the Primorye Territory asked residents to beware of scams that have long posed as employees of FES.