After being dumped, a man arrives alone at the hot-spring inn where he had planned to stay with his girlfriend. There he meets the beautiful Yuki, drinking in a yukata. When he tells her about his heartbreak, she drags him into a reserved family bath for an unexpected mixed soak. Her friend Nao soon joins them, turning the lonely trip into a harem fling as the two bored, horny wives demand him again and again and make him fill them both.