A thousand peach blossoms bloom for a lifetime.

In ancient times, the Emperor of Humanity, Zhao Ming, sacrificed himself to fight against the divine realm for the sake of the people. After Zhao Ming's fall, his lover, the Chaos Pearl, fought desperately to save a fragment of his soul, laying out a plan for countless reincarnations. Eons later, Zhao Ming is reincarnated as Xie Xuechen, the leader of the Immortal Alliance, while the Chaos Pearl becomes Mu Xuanling, the Saintess of the Dark Realm. The two finally reunite in the mortal world but have forgotten their past and become opponents who cannot coexist. Mu Xuanling saves the severely injured Xie Xuechen in the Dark Realm, using her life-saving grace to coerce him into joining her. Along the way, they transition from having their own schemes to fighting side by side, unintentionally developing feelings for each other as they lower their guard. However, amidst the conspiracy to seize the divine artifact, the Chaos Pearl, the two find themselves in a life-and-death trial. Mu Xuanling sacrifices herself to save the world, while Xie Xuechen defies fate to return to the past and rescue Mu Xuanling. With the calamity of countless ages coming to an end, Xie Xuechen finally returns to Zhao Ming's soul, but the true form of Zhao Ming has already become a fallen deity. Mu Xuanling awakens the fallen god with love, averting the catastrophe and bringing peace to the world.