In the final years of the Great Qian Dynasty, vengeful spirits ran rampant, and dark arts such as ghost marriages and blood sacrifices became widespread among the people. The court established the Exorcism Office to command Taoist priests across the realm. Though it appeared to suppress evil and banish demons, the office secretly harbored a shocking mystery.
The Blood Jade Linglong, an ancient divine artifact for suppressing evil, contains seventy-two vicious spirits. Legend says that gathering all four pieces will open the gates to the netherworld.
Long Hao bears the secret art Reverse Yang, uniquely created by his sect. It allows him to reverse yin and yang and track ghosts, but each use shortens his life, and its cultivation requires his own blood as a catalyst.