At the request of her bedridden teacher, 'I' investigate the current situations of four of her former students. When she meets and talks to them, she finds out that each woman is unhappy with her marriage and spends her days having sex with men other than her husband. Despite feeling a sense of guilt, these married women are unable to control their desires and continue to have sex again and again. "If my husband sees me, it'll be a big problem. But I want to feel even better." As she gets a glimpse into their sex lives, 'I' also start to talk about the sexual experiences that have happened to me.