Natsuki, a wife, and her daughter Hitomi are at a loss after losing their husband to illness. The one who saves them is Koji, Hitomi's late husband's younger brother. After hearing Hitomi's advice, Koji hires Hitomi's unemployed husband at a local store and lets Natsuki and Hitomi live in his house, which has many empty rooms. His brother had asked him to do this, but he had also been in love with Natsuki for a long time, and he was planning to take Natsuki, who he had been in love with for a long time, and Hitomi, who had matured and become someone else's wife, and have them both. A few days later, Koji starts his plan and the two are unable to resist...