The granddaughter of an imperial general, Su He, arrives at the White Mist Mountain near Tian Du to investigate the cause of a calamity. Unexpectedly, she encounters a great demon breaking free from its seal and attacking people. Fortunately, the occultist Mo Xunzhen steps forward to save her. Behind the demon's escape lies a series of schemes and conspiracies that have been in the making for years. Fates intertwine, truths await discovery, and thus the adventure begins.