I enjoy fantasy and historical dramas. Nightwatchman's Journal is not a masterpiece nor is it trash. Let me begin with the bad points. The drama was repetitive, but the repetition was necessary for the growth of the team. The plot of the drama is simple. Good versus evil. Good wins. Drama made several attempts to show the imperfections of the world such as mental illness, political greed, misusing tax money, misdirected love, and doubt. The drama ended answering a few of the imperfections. Acting The good points are the performance by the Kim Heung Soo and Ko Sung Hee. King Heung Soo played King Rin. His performance was exceptional. He stole every scene he was in. Now So Kung Hee played Do Ha. She was so convincing that over 90% of the viewers completely forgot she was illiterate and from the mountains. I would rewatched this drama simply because I enjoy fantasy dramas.