One day, Chitose, a mother who decides to live with her daughter and her husband and is pleased with the comfort of living with her family. However, as his son-in-law Koji quit the company, the relationship between the couple became visibly worse. Chitose stands in between and takes care of them, but Koji is attracted to her enveloping kindness. And when Koji, who had decided to change jobs, was told the strength of his feelings, he was swept away against his foolish feelings ...