Nanako's husband is an elite employee of a prestigious company and lives in a tower apartment in Tokyo. - She herself worked as a career woman before getting married, but now she is a carefree housewife. - What's more, Nana's desire to live a life that everyone envies does not stop, but accelerates, and she secretly surrounds herself with a handsome young man, Yuuki, without telling her husband. - One day, my husband decided to go on a business trip for three days.