Tomimi, age 50, lives with her stepson on the income from the real estate and company left by her late husband. Tomimi's sexual appetite is extremely , and she uses her stepson as an "outlet" for her sexual desires, letting him suck her off and have sex with her. One day, her own stepbrother, to whom she entrusts her company, comes to visit her because he is having financial difficulties. They meet again after a long time and talk about the old days over a . Do you miss me? I have this spot..." A fifty-year-old stepmother with a ripe and voluptuous body changes into a woman.