数名广州通缉犯伙同香港犯罪分子打劫麻雀馆，刚巧遇上蓝帽子警员，双方交火，受伤的部分省港旗兵决定逃回大陆暂避。不久，督察洪Sir接手此案，遂与大陆方面的刑侦科长王军合作，但因立场不同而产生矛盾。
Anthony Wong
Inspector Hung
Wu Hsing-Guo
Captain Wong Kun
Yu Rongguang
Shum Chi-Hung
Carrie Ng Ka-Lai
Hou-Yee / Hao Yee
Jennifer Chen
Cindy Lam
Yau Gin-Gwok
Shum Chi-Hung's partner
Gwong Siu-Yiu
Chen Zhin-Lin
Lam Tak-Shing
Lu Chun
Yang Lin
Tam Kim
Tam Chiu
Lee Wing-Fai
