Dr. Cheon is a likeable guy and the movie rightfully carries his name in the title. He also has his sidekicks, a small group of distinct characters. Unfortunately they weren't used much in the story. They are here mostly for show, but I can imagine them having more responsibilities in a sequel if they decide to make it.

I like this type of movies so the plot holes didn't bother me too much. There is adventure and fantasy, and a little bit of spirituality, and also action. Would like to see more movies like this from Korea. The atmosphere is great, especially in the first part where the comedy and a small bits of horror work well. At the end it becomes more and more generic but still very enjoyable and exciting. The runtime is good, not every movie needs to be 2-ghour long. All in all, not a masterpiece but a great relaxing evening movie.