The vice squad has been highly successful in clamping down on clubs in their area but, so far, one man continues to elude them. Jackie is the handsome, clever and unprincipled manager of a "gigolo club". An undercover female cop is planted in Jackie's club, in preparation for a raid, bu Jackie spots her and spikes her drink.
When Officer Lam and his team burst in, the only person acting suspiciously is the undercover officer. Lam and Jackie glare at each other. Jackie doesn't lose his cool, and Lam swears he'll get him.
Two more cops are called in. Tammy Cheung is an old colleague of Lam's, and Fun dresses in fatigues and plays up to being large and unattractive. Officer Tammy raids Jackie's club like she's just stepped off the set of The Moon Warriors. Anyone who resists is beaten and kicked (in a comical way, of course !). Jackie hatches a plot to neutralize her. He poses as a sensitive and artistic chap, then contrives a car accident in which she "cripples" him.
Playing on her sympathy in a very nasty way, he draws her into his life, and she succumbs to his (false) charm. But this is a romantic comedy, and Jackie finds his fondness for Tammy begins to grow. Love turns Jackie into a good guy of sorts, but Officer Lam is still after him. Lam finds he's fond of Tammy as well (and who wouldn't be ?) and, seeing Jackie getting more of Tammy's attention, Lam beings to get nasty.......