Xie Xin's father was murdered by the Black Dragon Syndicate. He went undercover for ten years, endured frame-ups and death traps, and finally brought down its third-in-command. Victory turned hollow when he learned they were just puppets. A bigger mastermind remained. His father left behind a coded secret—and Xie Xin volunteered to go back undercover. Deeper. Darker. This time, he's not just avenging—he's finishing what his father started.