This movie was made during the pre-humour stage of Jackie Chan's career, and is one of the relatively few serious movies that Jackie did. I like his humorous films as well but I find they can slow down the pace a little. Not so with this movie as it's action from start to finish.
This is one of the more interesting Jackie Chan movie that I've seen. Jackie plays a bodyguard who is hired to accompany a woman through a dangerous stretch of countryside. Jackie is hired yet agrees to do the job for free...this is just the start of a complicated story line.
Unlike his more humorous movies this movie is out-and-out action from the very start. The fighting scenes are good and frequent. The story line has a few twists and isn't just the standard `I will revenge my father/brother' plot. Interesting things to note are the 3D effects, at one point they enter a monastery that has swastikas on the wall, then when the team are trying to pass through a valley they start to play the Star Wars theme!!!
Overall this is quite different from most Jackie movies in that the story line is rich, the action is frequent, and the twists rival Fight Club.
Not the best movie he's ever done, but well worth a look.