In 1927, Beiyang fell and warlords fought. The drought demon breaks out of the ground in Lanxi, Zhejiang, and ravages the countryside with its epidemic. The young Taoist priest Zhao Ziguang crushes the scorched earth with the "soul-suppressing ruler" of a jujube tree struck by lightning, but finds an inscribed "Wuji" rune on the body - a mark of evil that is regarded as taboo by the decent.
As an orphan adopted by an abandoned member of the Tianji sect, Zhao Ziguang is accustomed to using talismans and police revolvers to travel around the world, killing monsters with his left hand and destroying evil with the right. He followed the hypocritical pretense of "Puji Hall" to Jiangxi Shanggao and witnessed the bloody ceremony in which children were made into "Huangquan Chalcedony"; in the secret realm of Taiyin in Qingcheng Mountain, Sichuan, while dealing with the killers of Huangquan Pavilion, he encountered the gluttonous remnant souls surging in the spiritual spring - the evil thoughts of the ancient evil gods were awakened by the turbid atmosphere of the warlords' melee.