If you are looking for an action drama that has little thing to do with the story, you might like this. However, I think the drama is a disservice to Ji Chang Wook's talent. I have liked him since he played as a king in Empress Ki and he proves himself to be an excellent and talented actor. I watched the first 5 episodes merely because of him, but I decided to drop it because I feel like the writer and the director paid too much attention to the action and less to the characters. Also, personally I don't like Yoona's acting. I think she'd better focus on singing. This is the first time I saw her in a drama, so I can't compare her performance in this drama with her acting in other dramas. The plot is everywhere, the romance seems awkwardly written, no chemistry between the main couple. I feel bad for Wookie. I hope he gets better offers in the future. Please pick a better project next time, Ji Chang Wook.