A mysterious prisoner falls into German hands. What could be interesting about a man who has lost his memory and remembers nothing about himself? But it is precisely he who suddenly becomes the reason for a sharp escalation in the long-running, stubborn struggle between Soviet and German intelligence services. The most serious forces are engaged on both sides, and the most experienced specialists and masters of their craft are brought into the operation. A new NKVD special unit—the Directorate “V”—joins the case. Now its officers must prove their skills in practice… Even their instructors go into battle alongside their former students. For they have no right to lose.