Connie Chan Po-chu's character's father was killed by the triads, leaving behind two daughters. The elder sister makes a living as a singer at a nightclub, and is sometimes threatened by triad members. The younger sister (Connie Chan Po-chu), who knows karate, becomes an assassin who punishes villains.
| Actor | Role |
|---|---|
 Connie Chan Po-ChuKong Yin | Kong Yin |
 Nam HungLee Ping | Lee Ping |
 Chow ChungSung Kar-Kui | Sung Kar-Kui |
 Tam Bing-ManTo Man-Wah | To Man-Wah |
 Lee Pang-Fei'One-eyed Snake' Se Kwong | 'One-eyed Snake' Se Kwong |
 Lee Sau-KeiNot listed | Not listed |
| CCheng Man-HaNot listed | Not listed |
 Chan Lap-BanAh Sai | Ah Sai |
| CChui YiMrs Kui | Mrs Kui |
| LLee Kit-YingNot listed | Not listed |
 Ko Lo-ChuenShop employee | Shop employee |
 Fung Ging-ManNot listed | Not listed |
 Lam Sing-FanNot listed | Not listed |
 Lau Kar-leungNot listed | Not listed |
 Lam SiuNot listed | Not listed |
 Tong KaiNot listed | Not listed |
| CChow LuenNot listed | Not listed |
 Lee YingBully Chor | Bully Chor |