One day, while on patrol at a local police box, she was appointed to a special investigation unit, and her first mission was to crack down on masturbation criminals who were operating in groups. Because solo action was essential, she started decoy investigation to find out their methods and weaknesses. Wearing a tight-fitting dress that makes her body look beautiful, when masturbation actually happens, she sets up a camera and checks the other person's gestures, and is suddenly attacked, and her body loses strength... It seems she was given a muscle relaxant. From there, she finds out that the men around her were also accomplices, and a nightmare of gang rape begins. Even though she continues to maintain a strong and noble heart that does not yield, her immediate superior betrays her and goes to the side of the unscrupulous group. There are no more allies anywhere, and her body and mind reach their limits in a climax sex circle. Her body falls despite her desire to punish them. When the woman who had been strong and enduring all along is sexually liberated, she reveals her vulgar high face and cumming in a trance while convulsing more than ever before. She could no longer judge good or evil and was heading down the dark side...