After moving into a two-family home with his mother-in-law Reo, a husband accidentally peeks at her while she changes. He has always noticed how voluptuous her body is, and although he feels guilty toward his wife, he cannot suppress his curiosity. Self-conscious about her middle-aged weight gain, Reo squeezes into shapewear so tight that her enormous breasts and heavy, rounded ass look ready to burst free. Overwhelmed by a body even more impressive than he imagined, he gets hard and spends the night watching for his chance to approach her.