Husband and wife Yamagishi, whose husband's workplace went bankrupt, move in with her father-in-law Mineo. Mineo welcomes them warmly... However, despite his age, Mineo is tormented by his insatiable sexual desire and fears that he might one day suddenly assault Kotone. But instead of worrying, he decides, "Rather than agonizing, take action!" and begins to plot to make her his own... Kotone, falling into the seemingly virtuous Mineo's scheme, is violated. Her father-in-law's insatiable carnal desires are far from over...
