Ivu is suddenly stalked and attacked by someone who forces her to ingest an aphrodisiac drug controlling S and M from the palm of his hand. Her consciousness drifts in a direction contrary to her will, yet her body responds in complete opposition. Even as she is slapped and choked, feeling the pain, her lower body instinctively reacts. An unprecedented pleasure gradually fills Ivu's mind, giving birth to a new sensation within her.