The plot of the movie about the Dragon and Tiger family

Cheng Zhihu, his younger brothers Cheng Zhipeng, Mei Ming and brother-in-law Wei are new immigrants from mainland China. With his extraordinary courage and skill, Hu became famous in the underworld. However, he was imprisoned for taking the blame for his boss Zhang Quan. After he was released from prison, he decided to leave the underworld. Peng is a member of Zhang Quan's nemesis Luo Lie, with a wild and competitive personality. In a vendetta, Peng killed Zhang's men, and Zhang forced Peng to murder a judge who strictly enforced the law on his behalf. In order to save his brother's life, Hu decided to join forces with Peng. In fact, the action of killing the judge was a ruse by Zhang and Luo to collude with each other to protect themselves. After Hu and Peng completed their tasks, they attempted to kill and silence them. Fortunately, they were saved by the help of another gang of gangsters, the Shantou Gang. , but was arrested by the police anti-gang team. Ming Jiwei was shocked to hear that the two were arrested, and decided to hijack the prison car to rescue Hu and Peng. The four finally escaped and planned to sneak out of Hong Kong with the help of the Shantou Gang. Unexpectedly, Zhang and Luo's men and horses arrived, and during the fight between the two sides, Ming and Peng were shot to death. Hu and Wei were filled with grief. Just as Zhang and Luo were celebrating their success in protecting themselves and being cleared of their charges, Hu and Wei both arrived to avenge Peng and Ming, and a tragic life-and-death battle was about to begin.