An excellent screenplay, which renews the traditional frame of Korean Drama. A single series but three times, quite original gags, astonishing turnarounds most often, a real surprise and a treat! Congratulations to Ha Yoon Ah, the screenwriter! As the comments say, a few nods to well-known dramas, notably Goblin, but while renewing expectations and situations. It's nice to be surprised by this scenario! Special mention to the cast, the actors are great, especially the two main actors. Their emotions know how to touch us and cross us. I would have put 12 stars, this show joins Kim Eun Sook's excellent dramas in my list! That's an understatement. It is a pity that with only 3 to 4% of the audience (source Wikipedia) when it was first released on television, this show did not garner more attention from the public. If you like well-crafted Drama scenarios, don't miss it!