TL;DR? If time machines existed, I'd go back and stop myself from wasting 20 hours on this. In the early weeks of this drama, this drama had so many positive comments and episode reviews, and so many of my friends kept telling me how awesome it was. It got to the point where I was dying to watch it, but I refuse to watch airing shows, so I waited. The wait brought on quite a bit of negative comments about the show, and I was really not sure what to expect when I went into watching this drama. After having watched 20 episodes, I can safely say I wasted my time with this and I want that time back! Potential would be the word I'd use to describe this show. This show had so much potential and it squandered it horribly. I think the problem is, the writers only knew one thing - comedy. I'm not saying they knew it well, since it wasn't all that funny, but they certainly didn't know anything else well either. Not women, not spy work, not friendship, not family. All of the elements that these ambitious writers tried to bring together failed on a spectacular level. There was ZERO chemistry between the two leads. I wanted so much to like this drama just because I loved the lead girl in Protect The Boss. But she was so wooden, so poorly written that I never once found myself caring about her. Or about the lead male. Or the second lead male. Or the parents. Or the friends. Or their coworkers. The two shining bright spots in this show would be the two trainers, Young Soon and Won Suk. They had more chemistry (as in friendship, not romantic) than any of the other characters combined, and I found that their scenes were the only ones I truly enjoyed. Do Ha was such a laughably ridiculous character, as was Sun Mi. Why spend time making either of them characters if you are just going to change their personalities with each episode? The first several episodes was devoted to showing how hard you have to work to become a civil servant, are we then supposed to believe that that hard work to become educated enough suddenly flew out the window, leaving all of the spies with the IQ of fourth graders? This show just kept coming to an impasse, and then repeatedly took the wrong turn trying to dig itself out of the mess it had made for itself. Nothing about this show made sense. The spy work was so ridiculously bad, I wouldn't be surprised to hear that the actual Korean spy network was suing them for how dumb they made spies look. Or giving them an award for it, for making anyone who watched this believe their spies couldn't find their way out of a paper bag, much less into covert operations. I'm at the point where if a review has been overly positive or negative, I try to bring it back around and point out some things that were good or bad, depending on the tone of the review. I'd love to say something here that would illustrate some redeeming qualities this show had. There are so many good reviews up here for it already, I am sure I am going to get so many not helpful votes for this. But there isn't anything I can say that would make these 20 hours worth it. If you don't have the patience of a saint, and you can't stand story lines that make zero sense in terms of characterization, don't watch this drama. I want my 20 hours back!