Eight years ago, while her husband was away on a work assignment, Eriko and Tatsuya lived together alone. Her husband rarely came home, leaving Eriko feeling lonely. Sympathizing with her, Tatsuya grew closer to her, and their bond deepened naturally. Once they became intimate, they couldn't stop—day after day, they made love passionately. However, their affair was discovered by her husband, who immediately demanded a divorce. Eriko lost custody rights and was separated from Tatsuya, unable to see him again. But eight years later, Tatsuya suddenly returns to Eriko's life. This reunion marks the beginning of a new, intense passion.