Great story line and as usual great writing and acting. I can see where this is going to be takin to the likes of Goblin and Descendants of the sun. The Korean film makers, especially the drama series, keep outdoing themselves. Very enjoyable, watchable and one not to miss. The concept is very intriguing, although time travel is not new to the drama series, it has a cool twist in regard to the relationships of the characters. I hjpe the last episode will turn out as I would like withe the two main characters getting together.