Asakura Ayane, the exclusive married woman, gains attention as a popular drama! Ayane plays the role of a stepmother living with Yoshio, her husband's son from a previous marriage. Within their seemingly happy household, Ayane can't suppress her hidden feelings for Yoshio, and despite knowing it's wrong, she finds herself falling for him. Meanwhile, Yoshio also harbors feelings for Ayane, and he gradually becomes aware of her emotions. Unable to contain himself in front of friends, Yoshio fantasizes about Ayane and is consumed by jealousy. Their mutual desires slowly intertwine, giving rise to a new, forbidden relationship.