Kidnapped and confined without warning, a diligent office lady is subjected to relentless BDSM training by a deranged manager. Day by day, her resistance fades as she learns techniques to please customers. Through this process, she transforms into the number one anal prostitute. The young company president reappears, brutally humiliating and violating her. Yet, though she becomes aware of his scheme, she has already advanced too far down a path from which there is no return.