Canadian surgeon Norman Bethune assists the Communists during the anti-Japanese struggle.

1943, the Japanese Army is falling back to the Pacific, leaving only collaborationist troops. Commissar Yang Xiaodong is sent to inflitrate the provincial capital.

Yi Ru is falsely accused of being a rightist in the People's Republic of China and severs all connections with his family.

Orphan Xiao Song is wounded in the Japanese attack that kills his parents and after recovering he joins the army and becomes an excellent soldier.

In Liujiajiao Village, a border area in Shanxi, during the Anti-Japanese War, Xiao Erhei attempts to marry Xiaoqin, despite opposition from various conniving locals.

About May 1942, the Japanese elite mobilized thousands of troops to bases in central Hebei. A platoon of army troops were ordered to cover the transfer, the platoon leader was seriously injured. Yan Zhigang Li met his aunt and was saved. He led the soldiers with Qingsha Zhang, to fight the enemy , remove and destroy the enemy's guard towers and to break their cruelty.