Born into a wealthy family and attending a prestigious girls' school, Kana enjoys a privileged life. One day, while drinking at a bar with her boyfriend, she encounters Kitashima, a man who once held a grudge against Kana's father after his company was shut down due to her father's decisions. When Kitashima confronts her, Kana ignores him, provoking his fury. Fueled by resentment and rage over past injustices, he kidnaps her. With yakuza involvement, Kana is subjected to repeated assaults. As brutal violations continue day after day, she begins to awaken to her own masochistic desires, discovering a new, submissive self through relentless torment.