All different personalities come together in the police department’s Special Crime Investigation Team. Lee Hyun (Seo In Guk) 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 (Jang Na Ra), an elite detective who has an ulterior motive for being in her profession and becoming a member of the team. Can the two different investigators learn to work together as they go after dangerous criminals? Watch drama online for free.