Zhang Jinsheng, Ma Hui, Wang Biao and Huo Qiang are sworn friends. They robbed a jewelry store together and went to prison. When they were about to be released, the four of them had an argument and fight with another group of prisoners in the prison canteen. Hui was sentenced to another two weeks, and Sheng was released as scheduled. Sheng went to the place where the jewels were buried to dig for cultural relics, but the jewels were gone. So he went to the prison and told Hui and others that the three men insisted that they would win the jewelry by themselves, but they had no explanation and had to escape. In order to investigate the whereabouts of jewelry, private detective Lin Yunshi met Sheng and left Hong Kong with Sheng. After being released from prison, Hui three posted searching for you, Sheng fled everywhere, and had a thorough investigation with Yun. It was discovered that Hui and Jin had long conspired to dig for treasures and set a trap for victory, so Sheng fought with other brothers, such as Chen and Hui.