Yui, the wife of a prefectural assembly member, fiercely criticizes low-cost investment properties proposed by bank employee Mabuchi, gradually losing her pride. Filled with anger that refuses to subside, she is forced to undergo a nude massage as further humiliation. However, Mabuchi mixes an aphrodisiac into the topical ointment and continues massaging Yui's intimate areas, making her body grow increasingly hot. Overcome by pleasure and losing all self-control, Yui ends up urinating in front of Mabuchi, who captures the entire scene in photographs.