One year after Emi and Ryo got married, Ryo is doing all the housework instead of Emi who works outside. Emi is busy with work and there is almost no conversation between the couple at home, Ryo tells herself that there is no help for it, and she has endured sexual desire. One day, Emi's mother, Nozomi, her mother-in-law, sees her masturbating. However, my mother-in-law reached for my crotch ...