Keung and Fai had been good friends since childhood. They both had keen interest in boxing-matches. Having parted with Keung for more than ten years, Fai had become a police officer. On the contrary, Keung had joined an illegal organization as a professional killer. Keung decided to resign from the organization
| Actor | Role |
|---|---|
 Norman Tsui Siu-KeungChui Keung | Chui Keung |
 Gordon LiuInsp Lau Fai | Insp Lau Fai |
 Lau Kar-leungLeung | Leung |
 Chor YuenMr Cho | Mr Cho |
 Shum WaiWai | Wai |
 Tai BoCID | CID |
| NNgai Lau-NaFai's sister | Fai's sister |
 Wong AauKeung's wife | Keung's wife |
 Fung Hak-OnFung Yan Chak | Fung Yan Chak |
 Mang Ding-GohKiller | Killer |
 Thomas Sin Ho-YingKiller attacking Fai at pier | Killer attacking Fai at pier |
 Derek Kwok Jing-HungNot listed | Not listed |
| NNip Kwok-ChiuNot listed | Not listed |