A few years after marrying a husband who came to work from the countryside, while living happily in the city, his wife, Eriko, was worried about her son-in-law, Kyo, who her husband left behind in his hometown. Eriko decided to return home with her husband on a midsummer day when record-breaking heat continued. However, for Eriko, who was used to her city life, living in a wooden house without air conditioning was unimaginably hot. The sweat that runs down her neck... the sweat that floats on her chest... the obscene sweat that colors her whole body pushes her mother-in-law into a distorted relationship...
