Xu Xiaonan accidentally transmigrates into a book and becomes Xu Nanxi, the only wicked goddess in another world. To escape her doomed fate, she decides to rewrite the script. But the seemingly frail man she picks up along the way is actually Chang He, the Demon Lord who slew gods and Buddhas a thousand years ago. Chang He takes care of Xu Nanxi because of the immortal soul and divine bones. Only after Xu Nanxi returns the immortal soul, divine bones, and Sword of Life and Death to Chang He does she learn that she is the most powerful god in the world, and that her existence is meant to put an end to war. Still, in order to return to her original world, she follows the original storyline and becomes a casualty of the war's end. Chang He discovers that he has fallen in love with Xu Nanxi and trades his immortal soul and divine bones to make the heroine reborn. That is why Xu Nanxi had Chang He's Sword of Life and Death from the very beginning. She thought it was only a matter of two lifetimes, but it turns out to be an unending knot of fate spanning lifetime after lifetime.
