Jing Koo (Stephen Chow) is a master of performing heinous tricks on people. Chi Man Kit (Andy Lau) is a newly promoted assistant manager at a very large corporation, run by Lucy's (Rosamund Kwan) dad. Banana (Chingmy Yau) is Lucy's best friend and a co-worker at the corporation. Macky (Waise Lee) is also a manager at the company and used to be Lucy's boyfriend. In order to get back into Lucy's graces, Macky employs the services of Jing Koo. As part of an elaborate scheme, Jing Koo becomes the long lost son of Mr. Chi (Ng Man-Tat), the dad of Kit and thus becoming the brother of Kit.
When Jing Koo finally feels guilty about putting the Chi family through so much, he terminates his 'contract' with Macky. However, Macky then decides to hire another 'trick master', played by John Ching. The ending scene of tricks played against each other is quite hilarious.
- Yellow Hammer