Mary, who lives in a certain neighborhood, is troubled by the balance between her accounting duties, cleaning duties, and her family life. One day, as she grows more and more dissatisfied with her neighborhood, the chairman, Nakata, asks her to participate in a moms' volleyball tournament. Mary, unable to refuse, reluctantly heads to practice, which is held every Saturday, but for some reason there are only a few middle-aged men there. The middle-aged men quickly get the confused Mary changed into her clothes, and with glaring eyes, they give the voluptuous Mary some sexual harassment instruction...