The asylum's most depraved ward hums with the echoes of twisted pleasures and pained moans. A new patient, her body marked with strange symbols, is brought to the 'treatment' room. The doctor, a leather-clad dominatrix, watches with satisfaction as the patient's ass is prepped with cold lubricant, her tight hole gaping slightly in anticipation. The doctor selects a monstrous, gleaming metal plug from her tray, the patient's eyes widening in fear as she realizes her impending fate. She's forced onto her knees, the plug pressed against her asshole, and with a swift, brutal thrust, it's buried deep inside her, stretching her asshole to its limits.