Eriko, a married woman who works as a first-class underwear designer. Because of each other’s work, the couple’s relationship has cooled down, and they have lost sight of themselves as busy middle-aged women. One day, Eriko reunites with Sugiura, the person who inspired her to work as an underwear designer. Sugiura was an old work colleague and lover. Two people who steal their husband’s eyes and fall in love like they used to. However, their unfaithful relationship is exposed by a man who is jealous of Eriko’s ability as a designer.