Sergeant Kwok Wah (Andy Lau) and Ho Lung (Ray Lui) are both colleagues and best friends. Ho Lung has developed hatred with a gang leader Dick. Dick sends Hung (Cherie Chung) as a bait to kill Ho Lung. Swore to take revenge for his best friend, Kwok Wah works with Ho Lung's partner Mother (Kent Cheng) to unveil the enemy. Kwok Wah saves Hung during an operation and Hung starts to like Kwok Wah. Kwok Wah and Mother follow their plan to capture Dick, but it ends in vain and both of them get into a gunfight. Hung is killed for saving Kwok Wah during the gunfight. Though heart-broken, Kwok Wah and Mother go on fighting the villain...
Andy Lau Tak-Wah
Cherie Chung
Kent Cheng Jak-Si
Ray Lui
Yung Wai-Man
Lau Siu-Ming
Maria Cordero
Shum Wai
Kam Hing-Yin
May Hoh
Teddy Yip Wing-Cho
Ng Hong-Sang
Tony Leung Siu-Hung
Jeffrey Ho Wai-Lung
Chan Chik-Wai
Lam Kai-Wing
Bruce Law Lai-Yin
Hung San-Nam
Barry Wong
Albert Cheung Miu-Hau
Dick Wei
Lo Wing
Charlie Chan Yiu-Lam
Lo Yuen-Ming
Shing Chui-Kwong
Yeung Kim-Man
Leung Shing-Hung
Lee Fat-Yuen
Danny Tang Yau-Kay
Lee Ho-Kwan
Wong Chi-Hok
Hoh Shu-Wing
Wong Hung
Chan Yuen-Tat
Sam Kin-Sang
Andy Shiu Cheuk-Yiu