Teralina Johnson is the naughtiest nun in the convent, and she tries to seduce the devil to see if it can be done. Unfortuantly, she succeeds in some way as she is soon bound in hellfire ropes and silenced with a nefarious device. She squirms and struggles, in a vain attempt to get free. Her cries go unheard from the other sisters as they know of her desires. Poor teralina cannot even use the phone beside her to call for help. Whatever shall happen to this naughty nun? Will she submit to the devil's desires or will she redeem herself and become pure?