Geologist Mu Yunli and history teacher Ji Wanqing are transported to a fantasy world by an accident, where they become heirs to the rival Divine and Demon Clans. He is a cold-faced war god born with divine meridians; she is a fallen fox princess who has struggled for a thousand years to grow even a single tail.
At the Hundred Flowers Banquet, she falls in love with him at first sight and boldly pursues him, carefully making her way into the forbidden War God Palace. His feelings shift from irritation to familiarity, then affection. But just as they pledge themselves to each other beneath the moon, the divide between gods and demons becomes an uncrossable chasm. Framing, the Frozen Hell, and a mismatched imperial betrothal follow one after another. He cuts out his heart and offers his blood to save her; she severs one of her tails to trade for his life. In their desperate willingness to give their lives for each other, they finally glimpse the truth of their feelings.
Then a fallen immortal’s conspiracy rises again. She is cast down into the mortal realm, loses her memory, and becomes a swordswoman, while he searches all three realms for his beloved. When they meet again in the mortal world, she stands at his side in the martial world under a new identity. Her memories have yet to return, but their feelings begin to blossom once more. When the mastermind summons the ancient Demon Venerable into the world, the only solution turns out to be the sacrifice of the Nine-Tailed Fox Princess…
Old souls meet again upon the Stone of Three Lives. Let us admire the moon and sing of the wind, and leave the past unspoken. In the final battle between gods and demons, she dissolves into starlight in his arms. Then, in a modern hospital bed, the two of them awaken at the same time and look toward a familiar figure at a conference. Was it all a dream, or will their fate continue?