In the 1980s, a stock market crash causes the sudden collapse of a multi-billion-dollar company. Elite anti-corruption investigator Lau (Andy Lau) uncovers a criminal conspiracy involving the company founder Ching (Tony Leung), who built the company from the ground up. Little does Lau know that he’s about to meet his match in a HK$200 million investigation that will entangle him for years to come.