"Your wife is pregnant." The doctor suddenly tells her, and her husband, Naoyuki, can't hide his surprise. He hasn't had sex with his wife , Anna, for several years, and she's already gone through menopause... But Anna is alone, gazing out at the villa while rubbing her swollen belly. ...How much time has passed since then? A young man has come to the villa using a map given to him by his father. And the woman waiting for him there is... A summer sonata played by the popular beautiful mature woman, Anna Hoshi!