Despite being a talented and attractive detective, Officer Park Yoon Hee's dream of joining the Violent Crime Division is thwarted by her father, the chief of police. Instead, he relegates her to the Unsolved Crime Division, where only two staff members, including herself, work tirelessly with little results. However, Yoon Hee's mundane routine is disrupted when she encounters a enigmatic young man who ignites a sense of adventure within her.