On a hot springs trip with her husband and father-in-law, young wife Makoto looks forward to a relaxing getaway. But her peace is short-lived as her father-in-law's twisted desires spiral out of control, and he suddenly attacks her. Drugged with an aphrodisiac in her dinner, her body begins to ache with arousal, and he relentlessly teases and torments her, gradually drowning her in lust. Losing all rationality, Makoto becomes a sex slave, greedily chasing NTR pleasure and repeatedly climaxing from creampie after creampie. Driven by intense possessiveness, her father-in-law takes complete control over her mind and body in vivid, realistic detail. By the end of this pleasure-filled journey, Makoto has become entirely his.