The show tells the story of new governmental body created to solve X files and high crimes cases. Federal Expert Service is bringing together specialists in various areas: software development, ballistics, forensic and investigators. FES is doing the whole range of expertise and researches, and it is investigating the most complex and intricate crimes. Launched as an experiment, FES trains young professionals and it assists to other special organizations as FSB and MVDs branches in solving crimes. Any investigator or detective, people from the Prosecutor's Office and a police officer can ask FES for a help. There was futuristic office created especially for shooting: laboratory, a meeting room, a morgue, interrogation room and so on.