Thrilling and mysterious story of promising young detective Sheung, powerful Madam Man and experienced undercover Bingo, who all work for Hong Kong police department.

The Kingdom Night Club “mamasan” Sa Ching-ha and her girls Shek Wai-king, Man Nga-lun, Kong Kit-yee and Yue Hau-hau get along well. Each of the quintet has her own reasons for playing the role of midnight lady. But they all have certain issues in their romantic relationships. After sacrificing everything for her boyfriend Dave, Nga-lun realizes she has been scammed. Wiseguy Cheuk Chi-fei wants to help her get out of this mess. However, their relationship becomes complicated due to Wai-king’s presence. Kit-yee has to make a choice between playboy Marco Hui and her old schoolmate Wong Tsun-kui. Hau-hau is messed up because of some freeloader. Ching-ha keeps waiting for her husband Lee Ching-lung to be released from prison. However … When nightclub people engage in power struggles, they do not hesitate to use dirty tricks to overpower their opponents. Moreover, everywhere is triad territory, and danger lurks around every corner in this place of indulgence and decadence.