When Chunshan experienced several demon attacks near the age of 18, he met a demon hunter, Shen Xuan, who gave Chunshan a bell and rang it whenever there was a crisis, and after several crises, their feelings grew deeper and deeper until she became a half-human, half-demon monster at the age of 18, who was manipulated by demonic nature to kill people unconsciously at night. But behind this lies an unspeakable ritual secret in the township of Lixia