This film tells the story of the Hong Kong ICAC elites fighting wits and courage with the underworld, drug trafficking, smuggling groups and other evil forces. They each have their own expertise, repeatedly made extraordinary achievements, and solved many cases. The female Chief Investigation Director Ye Guoying (played by Chen Farong), who is as brave as a man, Lian Zhigang (played by Zhang Zhaohui), a shrewd and experienced senior investigation director, Fang Zhuowen (played by Louis Koo) who joined the ICAC right after graduating from university, and the straightforward and cheerful Jian Minghui (played by Yuan Jieying), the orphan Luo Jiajie (played by He Baosheng) and the simple and kind-hearted Liu Zhishan (played by Zhang Yushan) and other anti-corruption elites. They are good at their duties in public affairs, maintaining social justice, and they also touch a lot of sparks in their emotions. The 20 episodes of Hong Kong TVB's "ICAC Inquiry" are co-starred by Chen Farong, Zhang Zhaohui, Louis Koo, Yuan Jieying and others.