The Hong Kong detectives, Chau and Beethoven, are back once more. This time, their mission is to protect a young girl from a gang boss' henchmen, who are trying to eliminate her so she couldn't testify in court against their boss. Meanwhile, the plot thickens when a police medical report revealed that Chau apparently has cancer; therefore, Beethoven will see to it that his partner will have a well-deserved vacation in his remaining months.
| Actor | Role |
|---|---|
 Richard Ng Yiu-HonChau | Chau |
 John Shum Kin-FunBeethoven | Beethoven |
 Deanie IpAnna | Anna |
 May Lo Mei-WeiMay Lo | May Lo |
 Wu MaHorsey | Horsey |
 Michael Chan Wai-ManKiller | Killer |
 Philip Chan Yan-KinSupt Chan | Supt Chan |
 Dennis Chan Kwok-SanCID Sgt | CID Sgt |
 Billy Ching Sau-YatKiller | Killer |
 Teddy Yip Wing-ChoHotel Front Desk Clerk | Hotel Front Desk Clerk |
 Stanley Fung Shui-FanCancer Patient in TV | Cancer Patient in TV |
 Fung Ging-ManCemetry Agent | Cemetry Agent |
| YYue Tau-WanYou Foo | You Foo |
 David WuDoctor | Doctor |
 Benz Kong To-HoiNot listed | Not listed |
 Clifton Ko Chi-SumNot listed | Not listed |