Mari is a compassionate nurse adored by her patients and considered the flower of the hospital. The hospital director constantly sexually harasses his nurses and neglects his work to research his own virility drug. Once it turns him insatiable, he rapes Mari and repeatedly cums inside her, staying fully hard after every load. He uses her throat as a sexual outlet with forced deep-throating, then even a patient betrays her and joins in for a creampie threesome. The once-innocent nurse, full of dreams and hope, is gradually defiled.