Under the neon shadow of the modern city, Xiang Hong, the descendant of the Miao witch doctor who is hidden in the city, sits in the traditional Chinese medicine clinic in the posture of white clothes and silver bracelets. On the surface, he hangs a pot to help the world, but in fact, he secretly cleans up the scourge of poisonous medicine. A bizarre murder involved her in the whirlpool, and also brought her to a fateful reunion with Mo Yuan, the reincarnation of the thousand-year-old Gu soul and the crazy evil god Mo Yuan - the golden silkworm Gu pattern on his left eye burned like a curse, and he was the other half of her destined love Gu, and also the greatest calamity and salvation in her life. He kills others like a demon, but he is gentle to her. She is cold and soft-hearted, but she changes her life to protect him. When the secrets of the ancient Gu clan are revealed and modern serial murders emerge, the two work together to break the situation and defeat their old enemy together under the bloody moonlight. This is a sad sadistic story wrapped in Chinese horror, and it is also an extremely sweet sadomasochistic love song where the male protagonist only loves one person. Love is both a poison and an antidote.