Matsuri is married to a man with whom she's currently sexless, causing her immense stress, while her father-in-law eagerly desires to see his grandchild. Secretly, the father-in-law begins giving Matsuri special fertility-enhancing massages, forcefully groping her big tits without restraint. His passion ignites, and driven by desperation, he decides to impregnate Matsuri himself, taking his son's place. Screaming "Get pregnant with my child!", he uses aphrodisiacs and his massive cock to break down her resistance, filling her with creampie after creampie. The story unfolds with intense, relentless sex as the father-in-law's insatiable lust and crazed determination overpower Matsuri again and again.