A few months after her marriage, Haru Shibasaki moves to her husband's remote hometown following a health issue in the community.

While Haru tries her best to adapt to the village despite its unique customs, a celebratory banquet for the couple's move leads to an encounter with her husband's senior colleagues.

This event becomes the catalyst for Haru to discover the existence of a long-standing, erotic tradition passed down through the generations in the village.