In "Jing cha gu shi IV: Jian dan ren wu" (called "Jackie Chan's First Strike" in the US), Jackie Chan has to find a missing nuclear warhead. Of course, if you pay too much attention to the plot, you'll miss the rest of the movie. Like any of Chan's movies, the point is to have him kick ass in various and sundry ways. The snowboarding sequence in my opinion should get registered alongside Gene Kelly singing in the rain as one of the great cinematic moments. And the ladder? I DON'T KNOW HOW HE DOES IT, BUT HE DOES IT!!!!!!!! So just have fun watching this (and I guarantee that you will). You could be deaf and still get a kick out of it.