Sumire has worked as a hairstylist for ten years. In her third year, she married the salon manager Nishimura, and the couple now runs the business together. Their marriage is happy, but with every conversation at work and home revolving around the salon, their sex life gradually disappears. Night after night, Sumire masturbates after her husband falls asleep, but that is no longer enough. Then customer Yuki visits the salon. They bond over shared interests, and because he is exactly her type, Sumire cannot resist teasing him while washing his hair.