Housewife Chikage (32) is in her 8th year of marriage, enjoying a mentally stable and peaceful life with her husband. They don't have children yet, her husband is busy with work, and her parents keep pressuring her to give them grandchildren—her only source of stress. Despite her happy marriage, she finds herself unable to understand why she's doing this. Betraying her husband—the man she first experienced—she becomes immersed in a passionate affair with a new lover. A taboo-filled, intimate story unfolds.