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.
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 so as to be adopted by her adopter. Later, Zhao Yongsheng's parents are killed by the enemy, he joins the Liberation Army. In 1947, when Zhao Yongsheng returns to his own village Tongbai, his sister Xiao Hua happens to find her brother. Doctor Zhou who works in the hospital of the army, adopts Xiao Hua without knowing she is her own daughter. He Cuigu has become a well-known guerrilla hero after she grows up. She doesn't recognize her brother Zhao Yongsheng when she carries him on the stretcher. After the war, Zhao Yongsheng, Xiao Hua and Cuigu meet each other happily; Dong Xiangkun and Doctor Zhou also feel happy to reunite with their own daughter after 17 years of departure.
