Just bear with me for the first 15 minutes or so, then you'll find yourself immersed into the movie. This doesn't mean that you can sleep for the first 15 min, because you may miss the subtly cute story line.
This movie is highly recommended to anyone tired of those superhero Hollywood movies. In this movie there is no Silvester Stallon or Bruce Willis; there is no evil villain to kick ass. Here we have real human heroes, who may be my brothers, sisters, friends, neighbors, or even myself, struggling in a crisis and managing to find a way to survive. In fact, these main characters are not even presented nicely. That was a pretty bad or clumsy job if the directors tried to present them as "heroes." Maybe they didn't, or maybe that's how these Koreans portray heroes.
Again, this is not a Hollywood movie. Some story lines and acting will be kind of hard to follow if you are not used to non-Hollywood movies. Maybe it is cultural differences. Just accept them as "different, maybe that's how they do things" rather than "awkward, so must be bad."
The bottom line is, aside from small kinks and flaws, you won't be able to turn away from the screen for one and half hours and appreciate every movement during the rock climbing scenes.
