The film tells about China, the liberation struggle of the Chinese people, the proclamation of the People's Republic of China on October 1, 1949, the transformation of the country after the victory of the Communists led by Mao Zedong, the elimination of illiteracy, the restoration of the economy destroyed during the civil war, the signing in Moscow of the Treaty of Friendship, Union and Mutual Assistance between the USSR and the PRC.