Daring police inspector Sai Gau (Zhang Jin) is determined to dismantle criminal Shing’s (Shawn Yue) gold smuggling operation but initially fails to capture him. As Sai Gau continues his pursuit, he uncovers Shing’s connection to triad leader Blackie (Yasuaki Kurata), who is hiding on a casino cruise ship in international waters. Shing finds himself embroiled in a power struggle within the smuggling network, leading him to kill his adoptive father and lose his portion of the gold to Blackie. Seeking revenge, Shing boards the cruise ship, where Sai Gau is also present, intent on apprehending him.