During the early War of Resistance Against Japan in Baiyangdian, Hebei, the Yanling Squad, led by Communist Party member Hei Lao Cai, conducted effective guerrilla warfare. Yang Xiaomei, fleeing abuse from her husband Zhang Jinlong, joined the squad and developed feelings for farmer Niu Dashi. Zhang Jinlong, unable to change, defected to the Japanese. As Japanese sweep operations intensified, Xiaomei, Dashi, and Zhang Jinlong faced different paths in the conflict.

Adapted from a novel of the same title, this film depicts a young woman’s transformation from housewife to loyal Communist. This process is presented as “natural” – possessed of inherent logic rather than merely “incidental”. Hence, the film is really about Communist revolution that won over the hearts and minds of Chinese youth.

After the major campaigns, the Liberation War’s focus shifted to the northwest. Hu Zongnan retreated south, and Fang Zhiqiao led his remnants to Mount Hua, known for its rugged terrain. Fang deployed forces at key passes, but a military intelligence officer, with herbalist Chang Shenglin’s help, cut off enemy communication by reaching the North Peak. A political offensive led to the surrender of the enemy at Qianshi Zhuang, controlling all passages between the North and West Peaks. Trapped, Fang Zhiqiao’s troops, with shattered morale, launched a futile counterattack, leading to his despairing lament.

In a mountain hamlet in eastern China, a poor woman faces trial after trial. Sold into marriage as a child, she is left a young widow and enslaved by her mother-in-law, who sells her to a poor peasant. Her second marriage turns out to be happy until fate takes away her husband and son. Now seen as a bearer of bad luck, she becomes a social outcast.

During the civil war, the counterintelligence agencies of the Chinese People's Liberation Army fought against Kuomintang spies and saboteurs. Battles are already taking place in the suburbs of the city. Zhang Go-zhong, head of Kuomintang intelligence, following orders from his command, leaves a large group of saboteurs in the city. He hands over the lists of this sabotage group to the remaining resident, the major merchant Cui Xizheng. The PLA enters the city and establishes people's power. But the hidden enemy immediately begins to act.