A century ago, war burned the Three Realms. Humans and cultivators fought to exterminate the demon race. A century of war left demons hunted and the world in ashes. Bái Yùlán, the last nine-tailed fox, infiltrates the Qīngyún Sect and crosses paths with the legendary Sword Saint, Lián Zhēn. Rivals at first, secrets, battles, and forbidden love force them to choose between loyalty, fate, and each other—because some bonds are stronger than war itself.