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.

In autumn 1948, during the Huaihai Campaign, Xie Yanfei, a reconnaissance chief, infiltrated Hekou City with driver Xiao Wang, using Lou A’mei as cover. Discovering the local Party organization was compromised, he sought his childhood sweetheart, Xia Cailian, who had joined the enemy’s service corps. They met secretly at Lou A’mei’s, but the enemy grew suspicious. After a firefight, Xie was wounded, and Xiao sacrificed himself. Xie escaped into a lake and was rescued by Xia Cailian, who recognized him as her former lover. Despite their past, Xie maintained secrecy and left without revealing their identities.

A recruit grows up quickly in the army and becomes a mature soldier.

A spy is shot dead at the border of North China. Investigator believe that there must be another spy crossing the border elsewhere at the same time.

Song of mango

Public Security Bureau officer Li Xiao inflitrates a gang that is holding up trains in the 1980s.

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.