The film's story goes like this: After the Marco Polo Bridge incident of July 7, 1937, Generalissimo Chiang Kai-shek led the soldiers and civilians of the whole country to the defense of the nation.
「旗正飄飄」的故事大致是這樣的：民國廿六年七月七日，日軍在北平近郊發動盧溝橋事變，並在八月十三日挑起淞滬會戰，此時，蔣委員長領導全國軍民禦敵，共赴國難。