A man working as a courier who will do everything except murder is given the task of finding out detailed information about the reporter whom he will eventually find out that they have a common past. This is probably Ji Chang Wook's most versatile work as an actor. Screenwriter Song Ji Na was able to beautifully combine humor and action and capture realistically evolving relationships between the main cast. The plot didn't drag on unnecessarily either and its occasional complexity managed to attract the attention of the viewer. I also have to praise the action scenes - they didn't seem to be too over the top, and they looked realistic (in my opinion) which is often not the case with Korean dramas. The series was pleasant to me, given the fact that the show aired in 2014 and even now, in 2022, the show remains unique with it's originality.