Orion Lin Feng, a mortal, embarks on the path of cultivating immortality to save his sister who is suffering from a strange disease, but unexpectedly gets involved in the secrets of ancient immortals and demons. In Heifeng Mountain, he meets Su Qingyao, who is both an immortal and a demon, for the first time. A secret key opens the fateful entanglement across the three realms.
He possesses the body of reincarnation, and is revived after death, with immortal memory; she possesses the blood of immortals and demons, is not tolerated by the two worlds, and is displaced. From the intrigues of the Qingyun Sect in the mortal world, to the hypocritical pursuit of the Tianyan Sect in the spiritual world, to the bloodthirsty decadence in the demonic realm, the two of them ran in both directions in the desperate situation where immortals and demons had different paths, and their love was deeply rooted in the test of life and death.
The truth about the depletion of spiritual energy, the man-made reincarnation dilemma, and the terrifying conspiracy of the extraterrestrial demons. Under layers of fog, immortals and demons are not opposites of good and evil, and reincarnation is not the law of heaven. Lin Feng falls into the devil's path to save his lover, and Su Qingyao burns all her immortal energy to protect the common people. When the fate of "only one person can live" comes, and when the life and death of the three worlds hang on a thread, can they break the shackles of reincarnation and turn the world around?
Thousands of reincarnations, just to find you; in the two lives of immortals and demons, only love will never die. This is a fate-defying journey across the mortal world, the spiritual world, the fairy world, and the demonic realm. It is also a unique love song that writes about protection and redemption in conspiracy, suspense, and reversal.