When her father-in-law, Hisashi, collapses from acute gastroenteritis, his daughter-in-law, Reika, stays over for several days to take care of him. However, Hisashi, who is naturally hearty and full of vigor, recovers in just one night. With nowhere to direct his pent-up sexual desire while bedridden, he decides he can't hold back any longer and attacks Reika in her sleep. Despite her resistance, Hisashi relentlessly toys with her body, making her melt. Though Reika is depressed by the shock of being violated by her father-in-law, Hisashi goes even further...
