In 1996, the Hong Kong police prepared to purge the gangs and create a legal environment on the eve of the reunification, and the association controlled by Mr. Tai was the first to bear the brunt of the attack. That night, Zhan Mi, one of the five masters of Mr. Dai's association, was assassinated. Zhang Hua (Cai Shaofen), his wife, Zhang Hua (Cai Shaofen), was as far away as Taiwan, instructing the bodyguard Wu Bao (Yu Wenle) to act as the boss to mediate the relations between all parties. prevent the second black water (du Wenze) from seeking revenge against the other four masters. Coffee (Huang Guanzhong), Jupiter and sand paper three owners heard the wind and each had a plan in the chaos. The real identity is that Wu Baodang, who is undercover by the police, has an unbearable hangover and has to deal with the club, Blackwater and the police in just a few hours. Yaling (Jiang Ruolin), who is secretly in love with Wu Bao, follows to help, but the community scuffle may break out at any time. On the other hand, the police, who have mastered the real killer, secretly arranged to take advantage of the opportunity to send an insider to complicate the matter in order to catch the community all at once.