Yun Gui was originally a medicine-gathering boy at the foot of Lingshan Mountain. He was destined to be unable to practice cultivation, but in an accident, he obtained the "Eye of Guiyuan" that could see the life span of others. He discovered that the monks in the world who strive for immortality are just constantly borrowing life spans from others, and the essence of immortality is to secretly exchange lives. Yun Gui refused to become a cultivator who deprived others of their destiny, and embarked on a journey to find the true way to eternal life. He traveled through the three realms, entered the abyss of demons, visited the underworld, played chess with immortals who had exhausted their lifespan, and formed an alliance with those who defied heaven and changed their fate. Every step is asking: Is eternal life exclusive or coexisting? On the vast journey to immortality, he constantly challenged the rules of immortality and used the "Eye of Return to Origin" to reveal the bloody truth behind immortality. Yun Gui's story is a new chapter in immortality about fate, sacrifice and reversal.