According to legend, there is a Kunlun Mirror among the ancient artifacts. If you can get this object and master the secret to open it, you can travel through time and space and reverse the fate of heaven and earth.
In his previous life, he was the Holy King of Yin Yue who led all the demons in the world, but in this life, he is a disciple of Xuanmen who shoulders the mission of exterminating demons and protecting the Tao. There is also the debt of love and hatred that he has been in love with for seven lives and seven lives. I thought that the painful past has disappeared. The clouds dispersed and were lost in the dust of history. However, the power of the Kunlun Mirror actually sent him and his niece back to the Tang Dynasty, where they once again faced the enemies who had framed him for eternity, and the beloved who had not changed in seven lives...