Saijo Sara is a married woman who is not satisfied with her sexual relationship with her husband. Unaware of his wife's feelings, her husband enjoys sex for the first time in a long time, ejaculating inside her while riding her with her legs spread wide, her big breasts shaking! However, he cannot feel the same excitement as when his brother-in-law attacked and forced him to deep throat her. Then, Sara's brother-in-law appears again, and he gives her a nighttime blowjob next to her sleeping husband! Excited by the sense of immorality, he takes a deep throat and wakes up his sleeping husband... a forbidden act...