This series revolves around a group of peculiar detectives in a new division created to fight against an increase in atrocious crimes. Osawa Eriko is a beautiful career woman who has just returned from training in the U.S. and is appointed as the "boss" of this division. But despite her intelligence and capabilities, she can never understand a man's heart, so she remains unable to find a husband. In fact, her assignment in the U.S. was really a demotion after she ruined her career track over a man. So why was she chosen as the boss of the new division? Even though the detectives are talented, they all have some kind of issue or flaw, and they are considered to be the "problem children" of the police force. In the end, the division's true purpose is just to isolate these problematic detectives.