While investigating a sexual assault, police constable MOK TSOK-TUNG is mistaken by LI WAI-WAI, an insurance broker, for the sexual offender. Along their way to catch the suspect, TUNG has an asthma attack. Basing on the clothing of the sexual offender, TUNG has arrested four suspects. His supervisor SZE KO-BUT suggests conducting a crime scene investigation, through which TUNG discovers that the victim is not WAI but somebody else. He has then devised a plan to make the sexual offender turn himself in. WAI’s supervisor SIMON LEUNG invites her to his home after work so that they can have better preparation for the meeting with a significant client on the following day. This has puzzled WAI beyond measure. WAI goes to buy some beauty products at a cosmetic shop, where she and other customers are suspected of stealing an item. Coincidentally, TUNG is sent to investigate the case.… ...

Though all witnesses and evidence available have put WAI in a very unfavorable situation, TUNG believes she is innocent and so returns to the site for further investigation. To his surprise, the area, once sealed off, is opened again and the whole place has been tidied up. TUNG has no choice but to purchase all the rubbish collected from SIMON’s home. TUNG brings WAI to his home, and starts to carry out an investigation into her three female clients referred by SIMON. Although TUNG manages to make the ladies reveal their secret relationships with SIMON, WAI who is considered to have a clear motive for the murder is still the most suspicious. She has therefore become very downcast. TUNG sneaks into the hotel apartment where SIMON rented, where he meets the hotel manager KENNY who seems so eager to greet him. This has surprised TUNG greatly.… ...

In order to collect evidence, TUNG decides to rent the apartment where SIMON was killed. He finds out that KENNY has installed a CCTV camera inside the apartment, just as he expects. TUNG, who wonders why KENNY is so determined to conceal the identity of the real murderer, compels him to reveal the truth. After her release from police custody, WAI is finally able to resume duty. But disappointingly things do not go very well for her – her colleagues keep gossiping about her, her supervisor unreasonably expects her to make greater profits, and the worst of all, all of her staff deliberately try to please her bitter rival ROMEO hoping for a greater chance of being able to transfer to his team. This has infuriated WAI beyond measure. BUT, who is resolved to fight prostitution, appoints TUNG to disguise himself as a customer looking for a hooker.… ...

WAI reveals to the press that TUNG is an asthma sufferer. Under the pressure exerted by police management, BUT, though unwillingly, makes TUNG take a physical fitness test. As recommended by his general practitioner DR. YUE TAI-KIM, TUNG goes to consult a gym instructor JIM TSIM, during which he meets WAI again. TUNG, who tries but fails to tease JIM and WAI, finally gets locked up in the sauna room by JIM. WAI meets LI SAU-FONG, a housewife, in the market. She regards FONG as a potential client and seeks to introduce her to various insurance packages. WAI is not welcomed by FONG’s husband LAI CHEONG and is thrown out of his house right away. WAI is so desperate for business opportunities that she offers to approach CHEONG, during which she accidentally discovers that CHEONG is the leader of a mysterious religious cult. In the mean time, BEBE’s father LAI WING arrives with TUNG.… ...

FONG would like to get insurance for CHI so that he does not have to worry about his future. CHEONG has no objection to this. BEBE persuades CHI to take a sip of the ‘sacred water’ and offers to have sex with him. After that, the pair have exchanged phone numbers. BEBE has been seeing CHI in secret, which infuriates CHEONG immensely. CHEONG’s business partner LUNG HING-CHUNG suspects CHEONG has conspired to gobble up his shares and has something to do with BEBE’s sudden disappearance. He is therefore very unhappy with CHEONG. CHEONG’s assistants are instructed to take BEBE back to the headquarters but along the way, CHI appears and manages to save BEBE, which enrages CHEONG frightfully. CHI is shocked to know that BEBE is enslaved by the cult and has been working as a prostitute over these days. He tries in vain to alert her to the truth and reluctantly decides to leave her.… ...