Simon Yam stars in this crime thriller as a bedraggled cop with a penchant for drink who gets information on a mysterious group who are planning to steal the diamond of the Emperor Chen. The group is led by the beautiful Anita Yuen and master minded by Man Cheung, a master criminal with a bionic arm. As the wearied Yam gets deeper into the mystery, he discovers that the diamond is really a key to the grave of the emperor, which purportedly contains a sum equal to half the world's wealth.