A timid man visits an inn known for mixed bathing and waits until late at night, expecting the hot spring to be empty. Instead, two tipsy married women join him and drunkenly complain about work and their husbands. When they notice he is completely naked, they grab his cock, and their pent-up frustration from sexless marriages erupts into a drunken affair and reverse threesome. He creampies both beautiful, busty wives one after the other in an exhilarating and embarrassing harem experience.