After the imperial beast tamers, Tian Fang and Ruo Ling, helped the Crown Prince get rid of the Rat Demon, the unsolved case that shocked the capital was finally closed. While the city basked in an atmosphere of peace and joy, another murder occurred in a small fishing village. From the location of the murders, Constable Er Liang Yin and Ruo Ling concluded that they formed a pentagram formation. The Imperial Palace was right in the middle of the formation, which was where Qiong Qi, the demonic beast, was hiding. The Crown Prince rushed back to the palace, but it was too late. The Imperial Preceptor had already killed the Emperor and framed him for the murder, demanding his arrest. When Tian Fang and Ruo Ling found Qiong Qi, the Imperial Preceptor arrived as well. Er Liang Yin realized that the Imperial Preceptor was his senior brother. In truth, the Imperial Preceptor had gone berserk over the years, pulling strings for Qiong Qi behind the scenes. He coveted Qiong Qi's powers so that he could one day rule the world. Tian Fang and Er Liang Yin fought against the Imperial Preceptor, but they were no match for him who had devoured Qiong Qi's power. Seeing Er Liang Yin getting defeated and Tian Fang being on the verge of death, Ruo Ling, who was trapped in a barrier formation, began to remember that she was once a cat demon with nine tails...