Lin Shen, a forensic doctor in the provincial capital, returned to Yuanling in western Hunan after his uncle fell off a cliff and died. When sorting out the belongings, he found half a book of "The Book of Souls" and clues about his father's disappearance, and was forced to get involved in the secret of exorcism. He met Axiu, a descendant of Miao embroidery, Lao Zhou, a corpse exorcist, and Chen Mo, a criminal policeman. They teamed up to go deep into Panwang Cave and uncovered the century-old grudge between the Zhenhun Sect and the transnational cult "Xuan Yin Hui" - Xuanyin Hui used living people to refine corpse poison in order to seek eternal life, and also attempted to release the corpse king of Pan Wang Cave. Lin Shen, who was tortured by corpse poison and struggled with hallucinations, gradually learned the truth about his father's "voluntary" arrest in order to protect himself. Finally, he used his soul-suppressing bloodline to awaken the Soul-Suppressing Cauldron, and united everyone to destroy the evil spirit. After the war, he gave up his job in the provincial capital and stayed in Yuanling as a forensic doctor to guard his hometown. Axiu inherited Miao embroidery, and Chen Mo devoted himself to education in mountainous areas, continuing the true meaning of "soul-soothing" with ordinary persistence.