Nam Woohyun and Kim Myungsoo with the SCU team are called in to solve a murder that has everyone confused. When each crime scene seems to be a romantic night in, with the romance being taken out and a dead body put in its place, police are uncertain where to begin. 

Murder is what it was labelled, it is how I label it now. For years though, it was preservation to me, preservation of innocence. I know better now and I feel remorse for my previous actions. I also understand better now, some things will happen regardless of how hard you try to stop it.