Correction Officer Kwok Kam Hung is a gambling addict and owes a large sum of money, so he constantly makes money through the inmates. The department finds out and fires him. Unemployed, Hung seeks other means to survive and recalls a trick formula that will daze the victim and take the victim's money. He first tries and succeeds in dazing a prostitute and taking her money. Hung then decides to inject the daze drug into drinks in convenient stores.
Acting
Bobby Au-Yeung's sweaty desperation carries the sleaze.
Direction
Wilson Yip's early work before becoming a genre auteur.

Director
Wilson Yip
Trivia, insights & behind the scenes
Wilson Yip would later direct Ip Man and SPL; this is his exploitation-era apprenticeship.
Category III films like this flourished in pre-handover Hong Kong, when local studios pushed transgressive content before the industry contracted in the 2000s.