Misako has been married for one year. She came to the Amamiya family as the second wife of her husband "Yosuke. Her husband, who is busy with his work, does not spend time with her at night, and her frustration builds up. One day, she receives a prank phone call... At first, she decides to ignore it, but the repeated obscene calls start to make her instincts tingle as a "woman" and she ends up having phone sex with the caller. From there, her life quickly descends to the bottom of the valley of lust....
