In today's society, there are many cases of fraud every day, and fraudsters often kill people without being seen. Bobby Au-yeung, Leo Ku, and Fu Mingxian form the "Royal Anti-Fraud Team", holding the banner of anti-fraud and smashing fraudsters' scams with all their strength! The CID of the Serious Crime Unit, Shing Kwok-tung (Leo Ku), was transferred to the most inconspicuous "Anti-Fraud Team" in the police force because of a reckless impulse. Tung was indignant and opposed his new boss, Kong Ik-ku (Bobby Au-yeung). Inspector Lam Chi-ho (Yin Yeung-ming), whom Tung admired, was suspected of owing a huge debt and was forced to a dead end by fraudsters. He shot himself. Tung decided to avenge Hao and changed his previous attitude. He gradually devoted himself to the work of the "Anti-Fraud Team" and started a relationship with the new team member Wen Jiabao (Fu Mingxian). He also worked with Ju to fight fraudsters. Ju is a lazy person. He seems to be careless at work, but he is actually well-prepared and can fight with ease. He is proficient in all kinds of gambling techniques and is familiar with cheating techniques. He has his own way of handling cases. Although Ju is in charge of the "Anti-Cheat Unit", he is still a sergeant, which makes his girlfriend Chen Weichen (Chen Farong), who has been dating for six years, very dissatisfied. Chen forces Ju to learn English to fight for a higher position, but Ju feels miserable. After several investigations, Shi Dong and Ju finally find the real murderer who killed Hao, so they secretly plan to bring him to justice...