Pure and innocent schoolgirl "Hina" is startled by a sudden approaching car on her way home from school. In her panic to avoid it, she accidentally knocks over a bonsai plant placed at her home's entrance. This single moment of misfortune drags her into an abnormal nightmare filled with the twisted desires of demons. No matter how desperately she pleads, their hearts remain unmoved, and a cold, relentless torture hell descends upon her one after another. The story depicts how Hina's innocent soul gradually becomes distorted.