Yumi, frustrated with her husband's lack of sexual desire, gives him oral sex, but he falls asleep immediately after ejaculating. While masturbating, she is caught by her son-in-law, who then coerces Yumi into performing oral sex on him. The next day, the son-in-law takes a day off from work and, after the family leaves for their jobs, has sex with resisting Yumi. Overcome by pleasure, Yumi indulges in sex with her son-in-law after her husband and daughter have fallen asleep.
