Sato Shinohara is a woman who grew up in a downtown area where she and her mother run a local diner. Mentally strong with a cheerful personality, she is the poster girl of the diner and is dearly loved by the regular customers.
One day, Kenta Miyama, the guy she is dating, proposes to her and she accepts. Although the Miyama family is fiercely opposed to their marriage because of the disparity in their status, she believes in her rustic boyfriend and marries into the family. At first, she is not convinced by the old-fashioned customs of the family, so typical of high society. However, after she finds out that Kenta has a wish in his heart to "make the family a normal one," she decides to challenge through…