Honami enjoys a comfortable marriage with her kind husband, but hates living with his vulgar, insensitive father and enduring his constant harassment. One day, the father-in-law finds her asleep while his son is away. Taking advantage of the empty house, he secretly pulls aside her underwear, devours her pussy, then brutally rapes and creampies her. From then on, he keeps seizing every opportunity to assault and defile her younger body behind his son's back.