"The Son of the Taihang" is an environmental-themed film adapted from the reportage "The Proud Son of the Taihang" by Geng Mengjie and Liu Jincheng. The protagonist of this film, Fan Qingrong, who is over seventy years old, is a native of Mengzhuang Town, Hui County. The "small power plant" worth one billion yuan highlights the touching story of the protagonist who started from scratch under the leadership of the party and worked hard to build a benign development with the power plant workers.

In 1946, to prevent the Chinese civil war, Zhou Enlai who represented the Communists held a talk with the Chinese Nationalist Party, and George C. Marshall, who represented the Americans at Plum Village in Nanjing. A lost notebook stirred the already turbulent peace talk. The ripples alert the three sides and a battle of spy and anti-spy began. Many historical figures like Zhou Enlai, George Marshall, Chiang Kai-shek, Soong May-ling, He Yingqing, Chen Cheng, and Hu Zongnan are depicted in the movie. Other fictional persona such as the ace agent Xiong Huiquan, the female journalist, and a secret spy who belongs to the Confidential Bureau adds tension to the critical moment.

Tianhai, a criminal gang led by Huo, robs gold stores many times and repeatedly escapes from the police encirclement with their clairvoyant-like "operations predictions." Upon hearing that Mentor Zhang Chenmo and his apprentice are entrusted with a mission at a critical moment, the criminal police quickly lock in on the suspect who is out of the police’s sight; But Huo is fearless, frequently committing crimes in a high-profile manner to provoke the police... And so a cat-and-mouse game between police and criminals begins.