Damn, I wanted to like this movie so bad but sadly I didn't. To be honest the storyline isn't new or refreshing, but if executed well, this could be another 'man from nowhere' but it failed. The story wanted to intertwine too badly, there were scenes that were out of place in my opinion. I would have loved to see way more of Song Ji Ho's perspective instead of focussing on Ma Dong Seok (whom I love). I didn't like it either that I saw some tiny movie mistakes (scene starts in the evening and the next shot is brigh day, too bad).
The cast however is well picked, they were not the one to fail in my opinion, its the storyline and overal directing of this movie that had failed the cast. Also the movie was quite predicatble.
The music is what I expect from these kind of movies; a little bit dark and mysterious.
I would not rewatch this movie, only if someone would ask me to watch with them.

Watch this if you like kidnapping movies.
Skip this if you expect top quality.