O-girl (Christina Carter) awakes to find herself chained down spread eagle to a wooden table with a vibrator tied between her legs. The vibrator erupts and O-girl struggles as she is slowly brought to orgasm. After the vibrator shuts off, a ratchet mechanism below the table pulls on the chains, stretching her. After the sequence repeats and O-girl’s limbs are pulled even further apart, she realizes that the fiendish device she is tied to is a type of medieval rack that tightens whenever she has an orgasm. Unable to escape or pull herself away from the powerful vibrator, can O-girl possibly survive?