All different personalities come together in the police department’s Special Crime Investigation Team. Drama describes various stories of middle class people, centered around love and freindship of two men and a woman who graduated from the same high school. Lee Hyun is a genius criminal profiler with a degree in criminal psychology whose tongue is as sharp as his wit. He is forced to work with fellow colleague Cha Ji An, an elite detective who has an ulterior motive for being in her profession and becoming a member of the team.