When a stock market crash causes the sudden collapse of a multibillion dollar company, an investigator (Andy Lau) uncovers a criminal conspiracy involving the company's founder (Tony Leung) and becomes entangled in a long-running investigation.

When a stock market crash causes the sudden collapse of a multibillion dollar company, an investigator (Andy Lau) uncovers a criminal conspiracy involving the company's founder (Tony Leung) and becomes entangled in a long-running investigation.