Reno is a respected doctor known at the hospital as serious, kind and capable, but privately she is an extreme masochist who can only become aroused by intense humiliation. An ex-boyfriend who knows her secret reappears and coldly tells her she will become his sex slave again before restraining her. She tearfully insists that she wants to abandon her perversions, yet her body twitches and grows wet when he pinches her nipples and fingers her. Taunting her obvious response, he pushes her back into submission until she offers him her ass...