The story tells the story of the 22-year-old beauty Ichika (Hirose Alice) got the 5 trillion yen inheritance from her late father, so she was sniped by her father’s siblings and wanted to kill her for money. In order to protect her, the housekeeper Hashida who lived with her Masako (Miki Mizuno) hired a well-known detective Chikumagawa Hikari (Takito Kenichi). He is a man of supernatural personality and paranoid. He will uncover his conspiracy before the assassin implements the murder plan, and he will explain his tricks and give them back. Brings a \”no crime, no murder\” reasoning drama.