On the cold night of Tianbao's third year, ice corpses died suddenly and mysteriously in Chang'an Ghost City, and a ghostly mandala emerged. The son of the guilty minister held Xuanji's plan, and the Taoist nun from Maoshan offered sacrifices to the Qingming Sword, which together broke the century-old blood sacrifice of Weishi. The dragon chain is broken, the Yin soldiers appear, and the imperial concubine's colorful clothes are rolled into the ghost gate - this game where humans, demons, and ghosts play together depends on the operation of the prosperous Tang Dynasty.