In the summer of 1939, Katya, a Soviet high school student, fell in love with a young German engineer named Alexander, who reciprocated her feelings. However, he was forced to leave the USSR abruptly without even saying goodbye. Then the Great Patriotic War began. And who could have imagined that Katya and her beloved would meet on the battlefield, under extremely difficult circumstances? In 1943, the Germans mined a hydroelectric power station in Dnepropetrovsk. A Russian sniper group, led by Katya, was sent to defuse the mines. At the power station, her squad encountered an enemy unit, led by none other than Alexander, ironically enough...