Erika Nishino, the head of the neighborhood association, decides to organize a marathon event to promote town revitalization and improve residents' health. However, several elderly committee members oppose her decision, especially due to the mandatory participation rule. One night, these older men witness Erika passionately kissing and making out with someone who isn't her husband. They secretly record the scene. Later, they contact Erika and present the photos as evidence of her affair, deciding to use it to confront and overpower her.