In this 1930s saga, Guangzhou is flush with corruption, and within this city of gangsters, Cheng Gau Mui (Sheren Tang) is groomed to inherit the triad throne. But when police officer Lau Sing (Wayne Lai) begins moonlighting as the heiress' errand boy, both their loyalties are put on the line. With the Japanese invasion on the horizon, how low will the community go to survive?