Well the other reviewers have done a great job explaining the plot :) So all I'll do is express my opinion.

I agree with the reviewer who said this film was bland. I thought so too! While there are some funny jokes in this, I thought there were too many scenes that were overly exaggerated. See, to me, the funniest movies and scenes come when they are somewhat rooted in reality, and this movie, on the whole, was so exaggerated it just wasn't funny. Besides, Chow has done better than this in the past. It's alright, but definitely not his best.