Sayo lives with her stepdaughter and her husband in an apartment. Her husband is indifferent, and she is always frustrated. One night, her stepmother Sayo's stepdaughter, who is interested in her bewitching body, sees her masturbating and aks her to perform fellatio on her. The next day, her stepmother have sex with her daughter and stepson, which awakens her to womanhood. From then on, she enjoys having thick sex with her stepdaughter and stepson.