The film reflects the following events of World War II: the capitulation of Friedrich Paulus's Sixth Army as a result of the failed assault on Stalingrad during Operation Blue in 1942; the preparation for revolt in Slovakia; negotiations of the Polish communists with Władysław Sikorski's government over their joint struggle against fascism; the creation of a National Committee of the Domestic Front in Bulgaria and preparation by underground workers-communists for armed revolt; expansion of the guerrilla (partisan) movement; the failure of a German attempt to destroy People's Liberation Army of Josip Broz Tito; one of the largest military operations, Bagration; the beginning of the liberation of Poland; creation of the Polish National Government in Lublin; the Warsaw Uprising; the capitulation of Bór-Komorowski and defeat of the Polish patriots; the entry of Soviet and Polish armies into Warsaw.