My biggest complaint about this drama is that it feels like it drags on forever. How many times are they going to try to execute a plan and then it fail? The time that was spent laying out and explaining the plan to the viewer was a waste of time because I, as the viewer, knew that the plan was going to fail. I also felt like the romantic montages were a waste of time. Finally, how many times is Kang Cheol supposed to almost die???

That being said, I watched until the end because the premise itself is extremely intriguing. I love TV shows/dramas that include a storyline with multiple dimensions. I also like Lee Jong Suk as an actor. I feel like this drama had so much potential with this original storyline, but again, it felt so dragged out that by the end of the drama I was just ready for it to be over. I'm giving it 6.5 stars because I did think that the acting was very good, the storyline was intriguing, and I did care about what happened to the characters. I don't think I could sit through this drama again though because it was just so dang long.