The young stepmother has had no sex and is frustrated every day, exuding female pheromones. The son, noticing his stepmother's fetish, sneaks away from his father and suddenly hugs her, playing a sexual prank on her. Her body reacts to it, and the two of them end up in a man-woman relationship. The stepmother's sexual desire only increases, and she brings in young men from the neighborhood and has sex with them, cumming inside.