Kim Jongdae lives by the clock, his life sorted into timetables and routines, never faltering from the ever-repeating patterns. His life holds no excitement, no new changes, nothing exhilarating. His days repeat over and over, doing the same thing. He refuses to change the way his life runs. Not even childhood friend and assistant Byun Baekhyun can fix it. Jongdae is known as South Korea's best detective, there has never been a case he hasn't been able to solve. He has solved cases all over the world. Nothing has altered his routines. That is, until now. When he is hit with a new case, something of which has challenged everyone else, Jongdae believes it will be easy. He believes he will solve it without too much hassle. However, once he begins his investigations, he buries himself into the unknown. With the never ending dead ends and randomly appearing information, his life is turned over. His clock is thrown into confusion. Routines break into millions of pieces. Timetables fall in front of his very eyes. All because of one case.

All because of Shadow.