In 1969, the most prosperous time of Hong Kong, private detectives Michael (Lau Ching Wan), Sam (Louis Koo) and Fugu (Jordan Chan) are investigating a burglary of an antique shop when they find a broken Aladdin lamp. Their fantastic adventures therefore begins with encountering a wizard named Harmy Bobo (Cecilia Cheung), Fugu's mentally-ill cousin Jane Lam (Christy Chung), gang leader Kin (Francis Ng) who steals the Chopsticks-sisters (Twins) and the Litter Bug. This movie is to salute to the full-of-hope and flamboyant era of Hong Kong in the late 60's.