At a clinic in Tokyo, men suffering from erectile dysfunction gather from all over the country. Rumors are spreading about this clinic, where patients are given a special aphrodisiac drug to heighten arousal, allowing the female doctor Fumika to take advantage of their aroused state and torment them with aggressive, dominant treatment. Under the drug's effects, the men's cocks remain erect nonstop, which Fumika carefully savors, intensifying their pleasure. Satisfying her own desires as well, she cures her patients' problems. Big-titted Fumika bares her breasts, fully prepared to welcome her patients.