In a love hotel room, Yurika arrives still dressed in mourning clothes after her husband's funeral. Her marriage had been sexless for years, and she had already begun an affair with his younger brother Natsuo. She removes her wedding ring, strips to revealing lingerie, and lets him bind her with red rope, grope and lick her breasts, kiss her, and fuck her hard. After she climaxes, one of Natsuo's friends arrives—just as Yurika intended. This brazen seductress deliberately sets a dangerous trap, then throws herself into it to excite both men and chase even more intense pleasure.