A solitary house located deep in the mountains of Gunma Prefecture. An elderly woman lives here alone, enduring loneliness since losing her husband over a decade ago. She works from home for an adult toy manufacturer, crafting adult products using molds of her own pussy. Her skills are exceptional, and she's assisted by her granddaughter. When a film crew arrives to document her work, they find the grandmother masturbating boldly on the porch—her panties off, pussy fully exposed, as she focuses intently on making the toys with an erotic expression. The crew becomes instantly aroused, unable to resist, and ends up having creampie sex with her right then and there. They spend the night at the grandmother's house, sharing an intimate, unforgettable moment between them.