Su Yi, a cultivation prodigy hailed as the Daughter of Destiny, was meant to live happily ever after with Li Yi, the chosen one. But on her wedding day, she publicly called off the marriage and turned around to wed Zhang Yi, a sect servant dismissed by everyone as a good-for-nothing. They all mocked her for ruining her future, unaware that Zhang Yi’s body sealed the remnant soul of an ancient Demon Lord, and that Su Yi’s true identity was the Soul-Calming Saintess charged with guarding him.