Towa is an adult college student who partly lives with her older boyfriend. After twisting her ankle while shopping, she follows his advice and calls a mobile masseur, unaware that he uses a diuretic oil as part of his predatory routine. His sticky, skillful caresses condition her entire body for forced orgasms. Soon the slightest touch makes her tremble and squirt, and inside the home she shares with her boyfriend, pleasure gradually overwhelms her resistance until she submits completely.