This drama has split reviews. People either hate it or love it. One thing I can say to people who haven't watched it - make your own choice. I watched this drama without reading the reviews or expecting anything, and I ended up enjoying the show. Yes, there were weaknesses in the plot, but the cast carried the plot through in times where it seemed to falter. If you see this drama as it is - a simple romance drama and not a technical thriller scifi, then you can really enjoy it.