The movie is well made with an interesting storyline although I had to find different subtitles multiple times to understand the movie in English, despite that in many places where the korean caption is written within the movie, there is no translation given in subtitles. I can compare and say I had a similar feeling while watching Game of Thrones final season only to arrive at a bad ending. Many aspects were inconclusive - some of the characters' stories were completely skipped at the end. The ending felt hurried and suddenly it's fast forwarded to someother timeline after several years and you'll remain wondering what just happened. Overall an interesting watch but they could have written the ending so much better while still keeping the story realistic.