The phantom thief Shadow Cat sneaks into a mansion at night to steal a gemstone possessed by a demon, but gets caught in a trap set by the demon. The sprinkler system activates, drenching Shadow Cat's body, which is weak against water. The water contains the "demon's saliva," a substance that heightens a woman's sensitivity, causing Shadow Cat to lose consciousness. The next day, Ai arrives at work as usual, working as an instructor, but is attacked by a man possessed by the demon. Her hypersensitive body is violated, and shaken by humiliation and shock, Ai vows to seal the demon away. That night, Shadow Cat returns to the mansion, but during battle she strongly feels the demon's influence and collapses. Her usual sexy attacks prove powerless, and she is defeated by the bodyguards. Yet greater humiliation awaits her... [BAD END]