After her husband's passing, Mari lives with her daughter 'Yuko' and son-in-law 'Kyoto'. Yuko often travels for fun and is frequently away from home, so Mari spends most of her time with Kyoto. One day, due to an unexpected event, the two find themselves in a twisted relationship. Despite being tormented by guilt towards Yuko, they cannot control their lustful bodies and agree to 'come together on nights when Mari wears perfume'. And today as well, unaware Yuko is present, Mari puts on her perfume, driven by desire...
