Kana enjoys a comfortable marriage with her kind husband, but hates living with his crude father, who stares lustfully at her body every day. One day, while her husband is away, the father-in-law finds her asleep, pulls aside her underwear, forces himself on her, and creampies her. Addicted to the younger woman’s body, he returns night after night, abusing Kana whenever he pleases and treating her like a sex slave.