Ren, a full-time housewife, visited an esthetic salon introduced by her husband as a treat for herself, but it turned out to be a crooked shop run by a middle-aged male therapist who develops women's bodies for his own pleasure. Using oil laced with aphrodisiacs, he gives her a sticky, borderline erotic massage to induce sweating. As her sexual sensitivity is stimulated, Ren says "stop" with her mouth, but her body cannot resist the pleasure and she gradually becomes horny. Spasming and urinating from the intensity of her orgasms, Ren's body is developed into a perverted state where her entire body is an erogenous zone, causing her to squirt repeatedly with an ahegao face. Hiding it from her husband, she returns to the salon again and again, becoming obsessed with the sexual development. She transforms into a slutty wife, letting out vulgar moans as she cums and squirts everywhere.
