盛唐时期，金吾卫陈云樵的妻子春琴在家里遇到了一只黑猫，她通过黑猫挖出了家里的金银财宝。在长安城接连不断出现死亡时间，甚至皇帝都离奇死亡。空海是一个日本僧人，他是过来给皇帝驱邪的，但是刚到就被通知皇帝已经去世了。原本白乐天是朝廷命官，但是却为了搜集写诗的素材贬为起居郎。白乐天和空海意气相投决定一起调查皇帝之死的案件，因为题目都不愿意相信皇帝是中邪死去。空海在皇宫中发现可疑的猫毛，白乐天也发现了杨贵妃的遗物香囊，引出这个猫妖作祟和当年的杨玉环都千丝万缕的联系。他们追寻到一座山中发现杨玉环的尸体，身边还有一个阿部留下来的日记，上面不仅记在了大唐曾经的荣光，还有当年的阴谋，也知道是当年的白龙化身黑猫一直在复仇

During the heyday of the Tang Dynasty, Chunqin, the wife of Jin Wuwei Chen Yunqiao, met a black cat at home, and she dug out the gold and silver in the house through the black cat. treasure. In the city of Chang'an, death times appeared one after another, and even the emperor died strangely. Kukai is a Japanese monk. He came to exorcise the emperor, but he was informed that the emperor had passed away as soon as he arrived. Originally, Bai Letian was an official of the imperial court, but he was relegated to living man in order to collect materials for writing poems. Bai Letian and Kong Hai agree with each other and decide to investigate the case of the emperor's death together, because they don't want to believe that the emperor died of an evil spirit. Kong Hai found suspicious cat hair in the palace, and Bai Letian also found Yang Guifei's relic sachet, leading to the inextricable connection between this cat demon and Yang Yuhuan back then. They traced to a mountain and found Yang Yuhuan's body. There was also a diary left by Abe beside him, which not only recorded the glory of the Tang Dynasty, but also the conspiracy of the year. revenge