夫が単身赴任する前夜、ひさ代は夫と浴室で前戯後、寝室でネットリとしたSEXをする。その後、夫のいない寂しさから飲む量が増え、ある日世話をしている息子宅に呑んで帰宅し、そのままオナニーをしてしまう。覗く息子。勃起した息子のチ〇ポを思わずしゃぶってしまう。翌朝、我慢出来ず息子の部屋に忍び込み禁断の関係を結んでしまう。
The night before her husband leaves for a new job, Hisayo and her husband have foreplay in the bathroom, and then have a sex in the bedroom. One day, she comes home to her stepson's room, where she is taking care of him, and masturbates. Her son peeks in on her. She blowjob her stepson's erect penis without thinking. The next morning, he sneaks into her stepson's room and has a relationship with him.