Now in their sixth year of marriage, the wife has grown dissatisfied with her marital life and suffers from intense sexual frustration. One day, she accidentally sees her neighbor masturbating, and upon realizing her abnormal sexual desire, he declares his intention to possess her body. Though she initially resists, she gradually becomes seduced by the pleasure of experiencing another man's seed. While maintaining a modest and dutiful wife's demeanor in front of her husband, she repeatedly climaxes wildly in front of the neighbor, surrendering herself to ecstasy. Witnessing the scene, her husband feels arousal. Thus, the couple becomes addicted to cuckold sex, forging a new kind of relationship.