The main participant in the secret police experiment "Undercover Taxi" Alexei Turbin enters into a deadly battle with a gang terrorizing the city. Every day he patrols the streets in a specially equipped taxi and simultaneously conducts a personal investigation. Colleagues consider the Turbine to be a magnet for trouble — because it constantly finds itself in the epicenter of events. But it is this quality that helps him solve the most complicated crimes.
During the next duty, patrolman Vera Sedova single-handedly prevents a tragedy at the college, but a student dies in the process. She claims that the guy had a sawed-off gun, however, no weapons were found. The policewoman is cursed by her parents and the public. The only one who becomes humanly sorry for Vera is the appointed lawyer Ilya Nesterov. Ilya is more and more immersed in the case and is convinced that his client may be right.
During the next duty, patrolman Vera Sedova single-handedly prevents a tragedy at the college, but a student dies in the process. She claims that the guy had a sawed-off gun, however, no weapons were found. The policewoman is cursed by her parents and the public. The only one who becomes humanly sorry for Vera is the appointed lawyer Ilya Nesterov. Ilya is more and more immersed in the case and is convinced that his client may be right.