This movie is adapted from the novel Heroes in Tongbai. Xiao Hua, a sister of Zhao Yongsheng, is deserted by her poor family. He Xiangdong, a woodworker, adopts her and rename her He Cuigu. To steer clear of arrest by the enemy, Dong Hongguo, offspring of a revolutionary family, is renamed Xiao Hua...
Operation Bosimao is put into effect by Chinese Nationalists to attempt to assassinate the mayor of Shanghai and slow Communist military action against a nearby island.