In the Zone of Special Attention

Somewhere in the Soviet Union, a huge military exercise is in preparation, between opponents designated as the "Northern" and "Southern" army groups. As manoeuvres begin, the commander of the "Southern" airborne regiment designates three reconnaissance groups to be dropped far behind "Northern" lines, to find and capture the rival "Hidden Command Center" (HCO) and to set up a radio beacon to show the location of the drop zone for the main assault. Two of the three groups are soon captured by "Northern" counter-reconnaissance units. The third, led by Lt. Tarasov (Boris Galkin), manages to dodge all the traps set by the enemy.