Mizushima Ai, 24 years old. Her occupation is a telephone operator. She has intense sexual desires and constantly craves fulfillment. Lured from a designated location by car to a certain building, she is met by several waiting men. Ai offers no resistance, willingly baring her body. Foreign object insertion, forced urination, full-body torment during gangbangs, anal training... As her arousal heightens, her body begins to respond uncontrollably. Her innate qualities as a female masochist blossom, driving her to crave deeper and stronger sensations.