In the twelfth year of the Tianbao era under the Tang dynasty, the Heavenly Demon is close to rising again. The Demon King plans to use its power to take control of the demon race, topple the human world and remake it as a realm of demons. With the Heavenly Demon expected to return in four years, the human Exorcism Bureau calls its gifted young members back to Chang'an to get ready. Hongjun, Jinglong and the other exorcists reunite at the border, where they uncover an uprising of fallen soldiers' corpses. The trouble appears tied to the legendary White Deer, and the team sets out to learn where it can be found. Across thirteen episodes, this action fantasy continues the exorcists' fight against the demons' scheme.