Jing Koo (Stephen Chow), the self-styled "Handsome Tricky Expert", who will gladly screw with you if it means a paycheck for himself. The payee is Macky (Waise Lee), who wants the handsome Kit (Andy Lau) out of the way so he can be made manager of the company. Jing Koo takes the job, and starts his con by fooling Kit's father (Richard Ng Man Tat) into thinking that he is, in fact, the long-lost half brother of Kit. Both Kit and his dad buy into Jing Koo's tricks, but their kindness is rough on the avowed trickster. Will he regret tricking Kit and his father? And will the office be reduced to a shambles once the "Handsome Tricky Expert" is done with them?