Renee Lee Wan

Bumbling private detective Chan Tam is enlisted by police pal Fung Chak to help in the investigation of a serial murder case. The victims a middle-aged man killed at home, a dead woman found in the trash dump, and a teenage girl slain in the park were all killed in grisly manners, but they didn't seem related to one another. With no clue to follow up on, Tam is decidedly at his wits' end.

A school is trying to sabotage a student group's efforts to put on a musical dance number, citing their atrocious grades. The group's leaders must lead everyone to the promised land of academic competency via some innovative cheating methods.