The elite group portraits of the three generations of prosecutors in the Republic, represented by Ren Ming Jiang, Li Da Kang, Xia Qing, and Lin Xi, highlight the professional mission of contemporary prosecutors to practice legal supervision and the professional personality and responsibility of maintaining social fairness and justice.

After a brutal invasion of China by the Imperial Japanese Army, a Chinese professor in Boston named Wu Ming Tai decides to return to Beijing to translate a document for the UN. This document confirmed the war crimes of the Japanese army against China. However, the Japanese general was aware of the professor's return home. The army would do anything to prevent the return of Wu Ming Tai, including kidnapping his brother and forcing him to become a Japanese citizen.