Elderly Zhou Guixiang is bedridden due to paralysis, and her second daughter-in-law, Wang Yumei, pretends to take care of her. A village doctor discovers injuries and writes a letter to notify the eldest son, Li Jun. Wang Yumei's younger brother, Wang Yusheng, learns of the evil deeds and, after unsuccessfully trying to persuade his sister, resolutely helps collect evidence so she faces legal punishment. Although suffering from a serious illness, Wang Yusheng ultimately lives a stable life together with the Li brothers and the elderly woman.