In a men-exclusive nurse dormitory, sexually frustrated women gather seeking pleasure. A heart mark on the door signals what goes on inside. Off-duty nurses reveal surprisingly erotic sides of themselves, secretly inviting men through the back entrance and indulging in wild, reverse-delivery-style fun. The residents are nurses from a general hospital, whose rotating shifts and demanding workloads build up stress, leading to mounting sexual frustration. For them, the ultimate stress relief is sex. Today, as always, various moans echo throughout the dorm. Why not casually drop by and experience the allure of these nurses? The nursing profession holds far more erotic secrets than one might expect.