To pay off her husband's debt in full, married woman Nanami Yokomiya is drawn into a mere 24-hour masochistic slave contract. Over the course of one day, she gradually loses her human dignity. Her throat is brutally pounded, gagging violently as vomit drips from her lips. Subjected to incontinence training, gangbang impalement, and creampie after creampie in utter despair—the cruel discipline brings forth a horrific ordeal. Clinging to her belief in true love, she struggles against her own body, now transformed into a masochistic slut. She prays to return to her peaceful life without her husband ever discovering the truth. Her devotion as a wife and love for her husband weigh heavily on her heart.