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. 

Nam Woohyun, 26 years old, born 08 February 1991, is in his final push to his dream job of being a specialist agent in the Korean Bureau. He was smarter and worked harder than most other people. As part of his training, follow him in his first case in the Special Cases Unit in the Bureau as he tries to make sense of what he is given. There's a killer on the loose and he seems to kill without discrimination, with no clear-cut reason, leaving almost nothing behind except a dead body and