Urara Urara plays a female detective who infiltrates an underground BDSM organization, marking her first experience with bondage in this milestone title. Filled with a strong sense of justice, she begins an undercover operation to expose the mastermind behind a series of grotesque crimes, but her identity is uncovered and she is captured and violated. She is then subjected to various tortures, including electric shocks, the wooden horse, tickling, and whipping, gradually brainwashing her into becoming a loyal accomplice to the criminal. The story captures her emotional transformation and how she confronts the forced role imposed upon her.