Lingxiyue is the legacy of the ancient moon god, born with the power to seal chaos, but it is also designated as a catastrophe of annihilation by heaven.
Xie Linyuan, the emperor of heaven, has practiced the ruthless way since childhood, and is destined to kill Ling Xiyue in order to preserve the Three Realms.
The two met in the mortal world for the first time. Xie Linyuan lost his memory after a tribulation, and Ling Xiyue saved his life as a mortal doctor. They fell in love with each other day and night and made promises for the rest of their lives. But after returning to his throne after a calamity, Xie Linyuan regained his memory, but was forced by fate and his master to cut off the love thread with his own hands and draw his sword at the heroine.
In order to protect his heroine from being killed by the immortal sect, he could only pretend to throw her into the heavenly prison and destroy her immortal bones, so that the world would think that he was heartless and unfaithful. Ling Xiyue did not know the truth and thought that she had been betrayed by her beloved.
The Demon Lord threatened Xie Linyuan with the common people of the three realms and forced him to personally inject the heroine with love-breaking poison. Xie Linyuan did so with tears in his eyes. Ling Xiyue was completely heartbroken and regarded him as his enemy.
Later, Chaos was born, and the three realms were about to collapse. Only Ling Xiyue's sacrifice of divine energy could seal the catastrophe.
In the end, Ling Xiyue looked at Xie Linyuan holding the sword in front of her on the Immortal Execution Platform. She smiled and shattered her spirit. Before she was gone, she only said one sentence:
"Thank you Linyuan, I will exchange my soul for you to have peace in the three realms. From now on, you and I will never have another life."
Xie Linyuan guarded the Three Realms, but lost her forever. He deposed himself as emperor and stayed at the Zhuxiantai for ten thousand years. He suffered from the heart-gnawing pain of love every day. The Three Realms were eternally peaceful, and there was no more Ling Xiyue. He lived forever and ever, living in regret and loneliness.
Purpose: The heroine's soul is lost in exchange for peace in the three realms. It seems that the catastrophe has been quelled and the world is eternally peaceful. However, the hero defends the world, but loses his only true love.