Yuichi remarried Kaori, a popular woman since her youth, and was living happily. But behind his back, an unbelievable situation was unfolding—one of a forbidden relationship developing between his wife Kaori and his son. Burdened with guilt toward her husband, Kaori tried desperately to stop her stepson's abnormal advances, but her efforts proved futile. The young, passionate son, using his guilt over his father as leverage, continued to pursue the mature, alluring body of his stepmother, forging a new, illicit bond. This escalating affair leads to a shocking series of events.