the mother-in-law comes from morioka, the hometown, to the daughter's house. however, the daughter is hospitalized, so the mother-in-law and son-in-law start living together alone. unconsciously trying to find similarities between the daughter and the mother-in-law, he becomes captivated by her more voluptuous body... and can't help but indulge in lewd fantasies. having a physical relationship with the mother of his beloved wife... but the mother-in-law also has her own lewd intentions... thus begins their debauched life, drowning in forbidden pleasure.
