When her son-in-law Shinji's company went bankrupt, the couple decided to return to their parents' home until she could find work. One night, Maki heard from Shinji that he was having a sexless marriage, and she couldn't help but confess that she was too. Shinji had always had a secret desire for Maki's ripe, voluptuous body, but when he found out that she was sexually frustrated, he couldn't suppress his desire and pushed her down... Maki's body reacted to his forceful caresses, her vagina wet with pleasure, and she accepted him, seeking pleasure as well...