A widow named Rieko lives alone after her husband passed away. Two years later, her daughter and son-in-law return home for a visit. They decide to stay together for a while. Although they seem happy living together, the son-in-law becomes dissatisfied with their lackluster sexual life at night. One day, he overhears Rieko masturbating through the bathroom wall. Excited by this discovery, he forces himself onto his wife despite her protests that it's too early since she just had a baby. After being rejected again, he turns his attention back towards Rieko and attacks her while she sleeps. Despite initially resisting, she eventually gives in due to her mounting desires...*The contents may vary depending on the distribution method.