In 1970s Hong Kong, the Independent Commission Against Corruption (ICAC) was formed to bring down the corruption syndicate led by British government officials. One of its top investigators is Senior Investigator Lau Kai-Yuen, who brought down countless corrupted officials. Just as he thought stability and prosperity are within reach, a new era of greed and riches takes him into a new battlefield of corruption.

Inspector Lam investigates the brutal murder of Tsui, a famous musician. Wong, the designated suspect, just spent 20 years in jail for the murder of Tsui's daughter but has always claimed his innocence.

Alan is a rich kid looking forward to a busy 24 hours: his birthday celebration tonight and attending court as witness in a criminal trial the next morning. Gal pal Wendy gets things rolling with plans for a night of non-stop partying. Alan's lawyer knows his client's unreliability, so he pressures Alan's dependable chum Chris to tag along. Chris's friend Sam, an entrepreneur eager to do business with Alan's crowd, also joins in for fun and profit. As they make the rounds, Alan gets increasingly plastered while searching for his latest infatuation, Ayaka. By sunrise, he's hardly in condition to testify and even the hangover-curing skills of bartender Cherry prove ineffective. As the deadline looms, another solution is sought. In the process, the guys discover their twilight craziness provided each with a new self-perspective that has intangibly changed their lives.

Nan Au-Yeung (Michelle Wai) and Sze Tso-chi (Ken Hung) share the same birthday, go to the same school, love photography, and are just as competitive. But they did not know of each other’s existence until they “crossed swords” at a debate tournament. And they both felt as if the fairytale prince and princess finally found each other. Later in a birthday party, Nan thought Chi played a trick on her, leaving a slap on his face. Four years later, Nan Au-Yeung encounters his ghost and learns that he is already dead...