A faithful mother (Chisato) who has been raising her son alone since losing her husband, loves and supports her son. Her son (Minoru) is an earnest young man who wants to pursue research and do a job that will please his mother. When Chisato tells her that she cannot continue her son's doctoral studies because she cannot continue with the tuition fees, the lustful professor is aroused, and he ends up raising and controlling the mother and son in his home... The professor is a leading researcher in Japanese literature, but he has a twisted sexual desire and propensity.
