Autumn 1941. Wehrmacht troops storm the Red Army’s fortifications in Transnistria. Their rear areas are teeming with German reconnaissance and sabotage groups. A professional scout and saboteur, Obersturmbannführer Stubber, moves among Soviet troops, having successfully disguised himself as an officer from an army intelligence section. But he doesn’t get lucky—young Russian lieutenant Andrey Gromov, appointed to command a pillbox with the formidable name «Berkut», gets in his way.