I think some other reviewer people who like explosions and robots gave bad reviews. I have never written a review this is the first for me, however this drama was the best ever. The acting was best ever and you will fall in love with all the actors if you pay attention to them. The thing I like best was the slow development of the story. I think others wanted it to develop in 2 seconds. See this drama do not skip a head and you too will find this is the beast ever drama. Reading the reviews I thought I would not like this drama. I have seen 300 or so k-dramas this one was the best ever.