Park Yeong Hui, a former national fencer turned narcotics detective, comes from a family of police officers. Han Cheol Su, the son of notorious criminals, falls in love with her, but their families disapprove of their relationship. To gain Yeong Hui's father's approval, Cheol Su vows to become a detective.
He spends seven years preparing for the police exam with Yeong Hui's support. As the exam approaches, Cheol Su's parents try to
