Hibiki steals top-secret information from a corrupt politician and enters a dangerous organization hoping to keep its enormous profits for herself. Captured with no escape, she is kept as a pet, bound from head to toe, and subjected to cruel training. A crotch rope strips away her composure and makes her climax while wetting herself in humiliation; she is then repeatedly fucked while restrained. Wooden-horse torture drives her mad with pain yet awakens her darker nature, and relentless pounding destroys the line between pleasure and despair. By the end, bondage and torture have conquered her with a twisted pleasure from which she can no longer turn back.