When I rented the video the back promised a korean blockbuster. Boy was that wrong: The story unfolds interesting at the beginning, but gets boring more and more later on. The German synchro was quite bad also so this might have been one reason why I didn't like the movie so much. And somehow nothing did make really sense to me - maybe it is just that I do not understand the Korean culture enough. So my advice: go and get something else, if you want fantasy take Lord of the Rings, if you want love and something spiritual rent Ghost or one of its clones.
This movie neither moves your heart nor keeps it your brain busy... So take my advice: if you are a Korean try it, if not - forget it.