Yumi visits her son Kazuya's share house after he moved out for school. However, Kazuya is out working, so she ends up serving home-cooked meals to his roommates, Suzuki and Aizawa. Unable to resist the innocent eroticism emanating from her, they get drunk and forcefully pin her down... As she trembles from the shock and pleasure of the cock she hasn't felt in a while, Yumi rediscovers the joy of being violated. Gradually, she finds herself riding atop her son's classmates, surrendering to their casual, irresponsible sex.
