The film is adapted from the novel of the same name written by Yan Zhiyang. It tells the story of Shen Tuo (Liu Lincheng), a descendant of Mohist's official technique, who enters the Promise Prison alone in order to rescue his beloved wife, Jiang Ren (Liu Jingyi).

The film consists of five story units: "Concert on the Clouds", "The Enemy and Enmity of the Square", "Welcome to Jina Village", "Calm Down", and "Sunset Red Scout". It tells the struggle of ordinary characters in the new era to pursue a better life. The story shows the country’s development and progress, people’s livelihood changes, and the people’s sense of gain, happiness, and security.