Rumi Shidara is a brilliant economist renowned for her beauty and sharp intellect, frequently drawing media attention. However, her honest demeanor and high pride make her a target for Satojima, a wealthy sadist backed by immense financial power and underworld connections. He kidnaps her and subjects her to his personalized BDSM training, aiming to break her spirit and reshape her to his desires. The story unfolds as her resilience and pride are relentlessly tested and gradually dismantled.