In a bustling office, a police officer is tugging at his hair in frustration as he again can't find a thread in a case that has dragged down the name of a prominent family. He had worked day and night to find a bright spot in this case. Yet, every time he tried to do so, he would only be slapped with the harsh reality that he would not find any clues in the case. The case looked so clean that the police were forced to call it a machine malfunction in the accident file.

That police officer couldn't give up, no matter how desperate he was right now. It's...