Chen Xie, the sole disciple of the three great evil-path masters of Evil Valley, has mastered three deadly arts: soul refining, Gu poison, and paper effigies. He also keeps a big white goose whose tongue is sharper than a blade—yet its true form is actually a mighty demon at the Deification Realm! Still, he plunges headfirst into the Western Branch of Bureau 749, a special agency of Great Xia, to serve as an investigator. Nascent Soul cultivators are as common as cattle in the bureau. While others fear demons and monsters like tigers, Chen Xie roams freely without restraint! Mountain spirits cause trouble, demonic cultivators run amok, and bizarre incidents erupt one after another. All manner of evil spirits go weak at the knees as soon as they hear the reputation of his three masters. Others solve cases through cultivation, but he relies on Gu poison to control souls, paper effigies to clear the way, and his divine goose to roast everyone across the Three Realms. Every bizarre major case is packed with thrilling action, as this evil cultivator struts around freely within the official establishment!