Ryoko Shinozaki, who had outstanding results in the entrance exam, hides her identity and conducts an undercover investigation into a vicious criminal organization. However, one day, a trap is set and her true identity is revealed. When she is finally caught, she is surrounded by vicious gangsters who bare their fangs and is subjected to horrific torture that is full of shame and humiliation. Will she become a pleasure slave and be sold off? What will be Ryoko's fate?