In order to fulfill the wishes of the client who wishes to have sex with his close relatives, Takeshi Karaki stands up... Peeping the whole incest plan! A consultation from her mother who is worried that her son, who once allowed her body, will continue to ask for a physical relationship, and that her remarried husband will find out.As advised by Takeshi Karaki, a mother who makes her son promise to have sex only once at the end.She secretly took a picture of it as evidence, but...Her son's desires escalate.So, in order to break the image of her mother held by her son, her mother has sex with a man other than her husband and shows off her obscene appearance.A son who runs into her mother who sucks Karaki's male genitalia while writhing with a toy.The son who was excited by her mother who invites a man with obscene words also sucks the cock that she gave out to 1P.What does the son think about the appearance of the mother who is disturbed by others and her own penis?