Adaptation of the French crime series "Raid / Braquo". A state of emergency occurs in the police detention center of the city of Kaliningrad: Major Andrei Ryzhov commits suicide, accused of a crime he did not commit. Four of his colleagues - Oleg Kaplan, Pavel Karpenko, Oksana Golikova and Fyodor Vachevsky, confident in the friend's innocence and decency, begin their own investigation of what happened. For them, it is a matter of honor to return Ryzhov’s good name and restore justice ...