The Independent Commission Against Corruption (ICAC) has received a series of complaints of corruption, a senior investigator led the new recruits investigators to maintain the integrity of Hongkong's efforts to experience many challenges...... New assistant research director Ma Jiayi (Guo Jiawenshi) to participate in training courses, and its positive and enthusiastic order to be responsible for the training of senior research director Chen Guoren (Chen Zhanpeng decorated) impressed. In fact, by his brother's instrument is rich girlfriend Qu Wenying (Natalie Tong) inspired to join the icac. Wen Ying is also a rich emotional stability of the ICAC investigators, and her boyfriend home. Home rich in it, the dream to design the network game one day to the successful launch of the market, to be successful and Wen Ying and get married. Wen Ying will be at leisure to Demin estate to visit grandma. One day, she heard playing mahjong grandmother with neighborhood when talking about District Council by election candidate Wu Dachu (Zheng Danrui decoration) the benefits to the residents is intended only for the increased chance of winning in a by election. However, as at the beginning of whether the act of bribery? Every man has a different view. The Commission subsequently received a report found during the investigation, as early cleverly "legal loopholes"...... An instrument training, in spite of benevolence misunderstanding, but completion of the training, actually won the cometlen award, overjoyed. In Renhe met years girlfriend Wendy (Elaine Yiu ornaments) in the cause of their busy, little time to meet, gradually change. Wendy real estate agent, brilliant results in a straight rise in revenue. She is gradually blinded by money, also think the benevolence of hard work and reward is not proportional, to lobby to kernel with her together in the development of the real estate sector; Guo Ren is that today the fair competition environment of Hong Kong, the ICAC for more than forty years anti-corruption results, adhere to the work is very meaningful. Guo Ren from his mouth that a real estate agent company doubt on developers fraud remind Wendy careful not in cahoots. Jia instrument received the first task at the same time, the kernel also back to the front line, Wen Ying an investigation of a watch group corruption case. Watch Group Chairman Fu Qiang Li (David Chiang decorated) hard work, unfortunately, through the financial crisis and bankruptcy, and the president conceded son Li Jianxin, their own retreat house behind the curtain, instigate the son of unfair to Norway to take money from companies and overseas set up shell companies, rescue, walk downhill to the business. Cases involving high-level bribery tour guide, so that they take the group when the first stop with visitors to the group's watch shop shopping. Because of the complexity of the case, chief investigator Guan Peilin (jiangmeiyi act) personally involved, led many investigators overcome various problems found in the process, by dint of careful and adhere to, and gradually promote finally successfully involved people court trial. ICAC cases a case after case, bribe to the bank loan department senior Cao Jinghong businessman Lin Hao, successful application huge borrowing and delay the repayment period. General director of the survey Bao Zhaocong (Lai Lok Yi decoration) linked with Wen Ying, Ren, after arduous and tortuous survey work finally arrested and charged Lin Hao, Jing Hong and other main people involved. When Pei Lin suddenly fainted, and more found after suffering from stomach cancer. Original Pei Lin since her husband after a decade ago traffic accident death, she will be spiritual sustenance in the work, and to take care of suffering from Alzheimer's mother, exhaustion of body and mind, is fortunate enough to support many years old friend and partner to work Yungkang (Kenneth Ma ornaments), accompany her to tide over their difficulties. Yongkang is also a senior principal investigator, who is wise and resolute. During the period of treatment in the hospital Pei Lin, personally leading tobacco companies took over the bribery investigation of smuggled cigarettes. The evidence of the difficulties, Yongkang decided to send Cheng Peishan (Fu Jiali ornaments) undercover. Listen to during the investigation found that she was pregnant, but for the sake of the overall situation, decided to continue working undercover. At the same time, Yongkang led the country to the three seed regardless of the Daban Island forensics, thrilling process...... In Rencha do a case of real estate developers fraud, astonished his girlfriend Wendy involved, was immediately deployed for another case involving social well-known businesses Cen Ziying (Florence Kwok decoration) of the listed company fraud. Purple jade like stone by the false warrant fraud and fraud under the profit from buying. The purple Ying is a celebrity, investigation work even more difficult. Until the investigation progresses to a mature stage, a number of investigators to implement the arrest action. Cases concluded, purple Ying was convicted and sentenced to imprisonment. Wendy also because on with a real estate developer senior staff fraud Commission, was formally charged. The ICAC investigators all but the wedding numerous, the benevolence promotion as director of the general survey, Peishan successfully gave birth to a son, and home to the rich development of network game eventually successful launch and Wen Ying and total harmonic coyly.