Housewife Kaoru has a smell fetish for men's sweat and body odor. She steals a shirt of a baseball player in her neighborhood and indulges in masturbation while smelling it. One day, she calls a toilet repairman, and she gets excited at the man's sweat while he's working. He secretly takes a towel stained with his sweat and masturbates in the bathroom. However, her action is noticed by the man, and from that day on, the days of love between them begin.