Based on real events, it tells the heroic deeds of Soviet officer Alexander Pechersky. The story takes place in Sobibor, one of the four largest concentration camps in Poland and a death camp. However, Alexander Pechersky did something impossible: in three weeks, he organized a resistance action of prisoners and successfully escaped a large number of people. Although some people were knocked down on the way, the remaining survivors joined the anti-fascist guerrillas.