Son Satoshi is asked to fetch soap by his mother, Mariko, who is taking a bath. Since her childhood, her mother's body has been more stimulating than she imagined, and her crotch reacts unintentionally, and Mariko kicks her out of the dressing room. However, Satoshi, who can't forget Mariko's nakedness, ends up masturbating while fantasizing about being squeezed by her bewitching mother.
