Lian Haolong (Sammo Hung), the master of Zhongxinyi, had a son in his old age and held a full moon wine to entertain the crowd. Although the child is born by his new concubine (Zhang Wenci), the appearance of Lian Haolong's wife Soso (Tian Niu) still has a sister-in-law demeanor. However, there was a riot because of the large number of people at the banquet. In the confrontation between police and bandits, Liao Zhizong (Li Xiuxian), a senior inspector of the anti-triad unit, came forward to resolve it and avoided a bloody battle. Brother Lian Haodong (Ren Dahua) is addicted to gambling, so Lian Haolong specially advised him to stop and talk about Brotherhood. After a 300 million yuan drug trade was smashed by the police, the fourth uncle (Xu Shaoxiong) was kidnapped. The police's anti-triad action made Lian Haolong's minions fall one after another, leaving only the ruthless Luo Tianhong (Wu Jing) who narrowly escaped death. Female police constable Lei Meizhen (Shao Meiqi is acted the role of) through seducing the enemy to go deep, obtained the key intelligence, the police opened the net. At the same time, even Haolong was surprised to find the spies who harmed him with his accomplices at the risk of life and death, who eventually led to the downfall of "faithfulness" and Lian Haolong.