Kwan is a successful businessman and family man who also happens to be Hong Kong's top drug lord. However, the years have taken their toll on Kwan; he suffers from diabetes and is looking to retire. But he's just appointed Nick as successor. Nick has managed Kwan's drug handlers for years with expert efficiency. It looks like a good move, as Nick seems more intelligent and able than Kwan's other partners. Unfortunately, Kwan is a lousy judge of character: Nick is really a cop, having spent seven years undercover to ferret out Kwan's heroin operation. Progress has been slow; Nick doesn't know where the drugs come from, or where they're made, and Kwan is reluctant to show anyone. But Nick's appointment to Kwan's heir comes with a full initiation into the druglord's empire, from the laboratory all the way back to their source in the Golden Triangle. With each step, Nick comes closer to finishing his undercover assignment and putting Kwan and his operation out of commission. However, each step also brings Nick closer to betraying a man whose trust he's earned.