In the dimly lit, sterile environment of the anal asylum, the young teen is stripped bare, her virgin ass on full display. The matron, a stern woman with a sadistic glint in her eye, selects an assortment of toys, from small to dauntingly large. The teen is made to suck each one, getting it wet and ready for her ass. She's then bent over, her ass cheeks spread wide, revealing her untouched hole. The matron starts small, pushing a thin toy into the teen's ass, making her gasp. As the teen's ass stretches and accommodates, the matron increases the size, fucking her harder and deeper until the teen is a squirming, moaning mess, her asshole gaping and dripping with lube.