With the help of Mergen, Hongjun and Li Jinglong have successfully roused the ghost king from his waking dream--but the danger is not yet over. The group soon learns that the one responsible for entrapping the ghost king is none other than the white deer Mergen seeks, a god of dreams who has fallen under the sway of the mysterious yao king. Worse still, the yao king has used the deer's power to take control of the ghost king's army, and more undead soldiers are on the way.