Betrayed by someone close to him, Dai Huan devises an intricate scheme to give his tormentors a taste of their own medicine.

With their son's life at risk, Dai Huan and Tao Lu meet a man who knows the game well and track down the Watchers, who raise the stakes.

After receiving a box with a loaded gun, surgeon and family man Dai Huan encounters an attacker and pays dearly for following his conscience.