Miki, living with her daughter and son-in-law. Their relationship is good, but the only thing that builds up her sexual frustration is the lack of intimacy with her husband. One day, while in this state of restlessness, she accidentally sees her son-in-law Shinichi's huge dick... Her heart captured by that manly thing, she can't hold back her surging impulse and starts milking him for his semen, anytime and anywhere. The non-stop lewd temptations from his mother-in-law drive Shinichi, who has been sexless with his wife, to finally pounce on that voluptuous body...
