Nozomi lived with her adoptive father. Her adoptive father, Mikijiro, is bedridden and needs nursing care, and has an unusual relationship with Nozomi. One day, her unusual care is seen by her son-in-law's boss. Tsukasa threatens Nozomi after learning of the unusual relationship between Nozomi and her grandfather, and uses it as an outlet for her desires. And furthermore, the relationship falls into triple incest by her grandfather, her mother-in-law, and her son.
