The fate of Captain-Lieutenant Viktor Cherkasov was experienced differently. A combat officer, a participant in the Great Patriotic War, he was out of favor for a long time, even imprisoned. Until, finally, the army leadership remembered the veteran’s rich experience. Cherkasov was sent to war-torn Vietnam to train military personnel in operating modern MANPADS. Everything was going according to plan until the Americans put into operation the latest Hugh Cobra helicopters, capable of evading deadly attacks from Soviet missiles. To find out technical secrets, the Soviet command decides to carry out an operation to capture the Cobra. The fearless captain-lieutenant Cherkasov also undertakes this dangerous task...Strategic plans, successes and miscalculations of the command, the cunning of the enemy, the exploits of soldiers and commanders - war as it really is. The authenticity of the events of our recent history.