In 1996, the Hong Kong police prepared to clean up the gang forces and create a legal environment on the eve of the return. The society controlled by Mr. Dai was the first to be hit. That night, Jimmy, one of the five hall masters of Mr. Dai's society, was assassinated and shot twice. His life and death were uncertain. Jimmy's wife Zhang Hua (played by Ada Choi) was far away in Taiwan. She instructed the bodyguard Wu Bao (played by Shawn Yue) to act as the boss to adjust the relationship between all parties and prevent the second-in-command Heishui (played by Chapman To) from seeking revenge on the other four hall masters. Coffee (played by Paul Wong), Jupiter, and Sand Paper heard the news and made their own plans in the chaos. Wu Bao, who was actually an undercover police officer, was drunk that night and had to deal with the society, Heishui and the police in just a few hours. Yaling (played by Elanne Kong), who had a crush on Wu Bao, followed to help, but the melee between the society could break out at any time. On the other hand, the police, who have mastered the real culprit, secretly arranged to send out an insider to complicate the incident in order to catch the gang in one fell swoop...