After police officer Piao (Bill Tung) is murdered, his soul cannot be at rest for his murder has been written off as a suicide. Therefore the heavens send him back to Earth as a spirit to find his 'savior' who will help him clear his name. Hsing, a rookie officer, is the savior (Stephen Chow) and in return for finding Piao's killer, Piao must help him a girl (Vivien Chen) he likes and a promotion.

Stephen Chow makes a likeable comic hero in this comedy/parody of buddy cop films. There's plenty of supernatural cop shenanigans and scatalogical humor. It's quite funny and amusing most of the time. Quite enjoyed it. Chow is ably assisted by Bill Tung, Stanley Fung and some wacky villains in delivering good entertainment. Vivian Chen and Amy Yip are eye candy.