Reiko Yamaguchi lives in an old apartment with her husband Takashi, overwhelmed by his insatiable sexual desires. When a new man moves in next door, Reiko begins suppressing her moans out of shame and starts refusing her husband. In response, Takashi becomes furious, and to calm him down, Reiko pleads, "I'll do anything." He then forces her into increasingly degrading acts. As the demands escalate day by day, Reiko struggles internally but gradually complies, even against her will—until she begins to feel unexpected pleasure from the acts. As her relationship with her husband grows more complicated, Reiko is forced to reevaluate her emotions and personal boundaries.