Independent Commission Against Corruption (ICAC) investigator Yeung Tai-chee (played by Aaron Kwok) is full of enthusiasm and enthusiasm for his work, and even if he has been repeatedly defeated, he is still defeated and persevering. Chiu Wing-yi (played by Chu Yan) is a new investigator who has just joined the ICAC and is assigned to the same task force as Tai Chi. However, her competitive personality caused the two to quarrel and conflict. Detective You Lesheng (played by Wu Yijiang) meets Liang Xiaomin (played by Kwan Wing-ho), a blind girl, and is deeply attracted by her optimistic and cheerful personality. Two young men and women are facing a major test of career and love, family and friendship. They will unleash the spirit of the ICAC and fight on the front lines of various bribery and corruption incidents.　　Produced by Hong Kong Television Broadcasts Limited, the 20-episode fashion drama "ICAC Action Unit" starring stars Aaron Kwok, Chu Yan, Ng Ngai Shong and Kwan Wing-ho, is also the last TV series produced by Aaron Kwok and Chu Yan on TVB.