A German spy has been killed in Moscow—one who managed, shortly before his death, to send a coded message to the Abwehr about a secret training ground where the Russians test a super-destructive bomb. This operation is only part of a cunning game by the Soviet counterintelligence SМЕРШ. The trap for the Abwehr has been prepared. Closing the exits from it should be Major Vladimir Kogot of SМЕРШ with his special group made up of combat officers. The group of Kogot will be opposed by elite reconnaissance and sabotage units of the Abwehr. The first to make a mistake will face inevitable death.