Sunao, a nurse, was promoted to head nurse because she worked hard, but she missed her chance to get married... Sunao's current pleasure is to masturbate with a dildo hard in the hospital late at night when everyone is asleep. Her voice echoes throughout the hospital, and even rumors of supernatural phenomena are whispered. One day, while shoving a dildo deep into her vagina as usual, she is found by a male doctor. She seduces him, and Sunao, delighted by the pistoning of a real dick for the first time in a long time, starts inviting other men in the hospital...