Kana, a former special agent known and feared as the strongest, has given up that title and is living a peaceful life with her beloved husband... One day, her husband's boss, who is taking care of her, comes to visit her house. That boss was a man with a deep connection who had once arrested him and sent him to prison! Her happy life ends when her past as an investigator is revealed. Kana, who continued to comply with her demands while being threatened, was in a despicable situation.