Struggling movie producer To Wai-Cheung (Chapman To) is hardly able to make ends meet, yet his daughter (Fiona Sit) hopes to one day sees him being interviewed on TV. In order to fulfill his daughter’s dream, he meets Tyrannosaurus (Ronald Cheng), a Guangxi based triad head and a movie investor with a peculiar taste. Tyrannosaurus wants to remake a category III movie starring his childhood idol Siu Yam-yam called Confessions of Two Concubines.
Tensions arise when Jack Chan, a spineless constable who regards his work as a job but not a career, is partnered with an energetic and conscientious policewoman, Man Liu. When a serial killer emerges in Hong Kong, Man Liu swears to catch him. Jack is impressed by her bravery and decides to secretly protect her.