Kogawa Iori is a kind and gentle female doctor who conducts daily home visits, earning deep trust from those around her. One day, she arrives at the residence of a man named Yajima to provide treatment. Though locals sensed something off about him, he is in fact Yajima, the boss of a yakuza syndicate. As Iori desperately treats Yajima, who has only a short time left to live, she becomes ensnared by his obsession with bondage and is subsequently kidnapped and imprisoned. Her ordinary medical routine suddenly plunges into a dark and horrifying world in this shocking tale of abduction, confinement, BDSM, rape, and humiliation.