Three young adult coworkers are hopelessly in love with Mami, the kind and comforting 36-year-old married woman at their part-time job. Their long-awaited mixed hot-spring trip begins with the sight of her naked body making them jerk off and cum. Tipsy Mami responds to one man’s heartfelt confession with sex after a long dry spell, then gently gives the virgin a hands-on lesson with her mouth. After more drinks, she joins all three admirers in a wild foursome and drains nine loads of their pent-up cum.