Marina longs for a child, but her sexually indifferent husband will not touch her, leaving her to endure her frustration alone. Then her womanizing brother-in-law Takeyuki suddenly comes home and sees straight through the desires she has been hiding. She insists it can happen only once, but his persistent, attentive caresses and brutal thrusts awaken sensations her husband never gave her, making her climax again and again. Before long, she is swept away by the pleasure she finds with him.