A new nurse forgot to apply lubricant to a patient's anus due to hemorrhoid treatment. Unexpectedly, a speculum is inserted in that dry state! While shocked by the sudden turn of events, she endures strict reprimands from the hospital director, expecting the usual sexual harassment to follow. But an unforeseen twist occurs—the boyfriend of a senior nurse turns out to be a fellow patient in the same room. This secret is exploited, forcing her to allow vaginal penetration from an AF (anal-to-vaginal) act. An M man accidentally stumbles upon this forbidden scene in the proctology examination room late at night. In exchange for his silence, the nurses force him into anal sex! One shocking development after another unfolds!