The nuthouse becomes a perverse playground for a nurse with a fetish for tight assholes. She selects a newcomer, a gorgeous, hesitant young woman, for her twisted "asshole therapy." The nurse commands her to strip, revealing her perfect, round buttocks. She resists, but the nurse is insistent, pushing her face down onto the cold, hard table. The nurse then proceeds to violate her asshole with a series of large, phallic objects, from dildos to strange, twisted tools. The kitten's cries of pain and pleasure echo through the asylum as she's pushed to the brink of her endurance.