Secretly Greatly (Blu-ray release 2014-1-3) tells the story of 3 North Korean spies living in South Korea doing mostly unimportant things, until a commander gave them a life-changing order.  The first half of the movie is comedic and is very fine.  However, after that the tone of the movie takes a drastic change.  During the climax everyone makes a lot of unreasonable decisions.  If it is less unreasonable it might have been a worthwhile movie.