Reckless police inspector Sai Gau (Zhang Jin) is on a mission to crack down on criminal Shing's (Shawn Yue) gold smuggling scheme, yet fails to arrest him. As Sai Gau continues his manhunt, he discovers Shing's involvement with triad boss Blackie (Yasuaki Kurata), who hides on a casino cruise ship on the high seas. Shing has been involved in a power struggle within the smuggling ring, and is forced to kill his adopted father. He also loses his share of gold smuggling to Blackie. To get even, Shing appears on the cruise, while Sai Gau is there to hunt for him.

The world renowned “Invincible Hand” Ken could identify not only mahjong tiles, but also cards with his fingers which had made him a legend. Upon his retirement as the Chief Security Consultant in Las Vegas, Ken returned to his hometown Macau, where he met his old friend Benz, and Benz’s son Cool and nephew Karl. Both Cool and Karl wanted to follow Ken. Ken claimed that if Cool could successfully cheat him once or win over him, he would then accept Cool as his protégé. Cool’s step brother Lionel, an undercover agent, had disguised his identity in an international gambling mafia which had planned to form an alliance with mafias in illegal gambling from all over the world to control the result of soccer matches. Lionel had recorded the entire conference, with the criminal evidence kept in an imitated eye. The eye was coincidentally given to Rainbow, Ken’s only daughter, which put her in danger. The retired Ken was forced to use his “Magic Hand” once again to uncover the evil plan…