Ah Jiu was born as a princess of the demon clan and a nine-tailed fox that is rare to see in a thousand years. But instead of being a glory, these nine tails are an "ominous omen" that will lead to the annihilation of the clan. Abandoned by her loved ones and expelled from her own clan, Ah Jiu dragged her bloody severed tail and fled from the demonic mountain in the cold winter to the prosperous world of human beings. She just wanted to find a place to live quietly. Later, she met a young man who was as cool as the breeze and the moon, the young master of the Shen family, Shen Qingxian. He would hold a sword for her when she was bullied, cover her with clothes when she was cold, and gently tell her: "Don't be afraid, I'm here." Ah Jiu was moved, thinking that he had finally found his destination. Until that day, the demonic energy was accidentally leaked, and the Shen family's "demon-suppressing sword" was unsheathed, and the tip of the sword was pointed directly at her heart. Only then did she see clearly that his cool and proud body was actually the awe-inspiring righteousness that killed all the evil spirits in the world. What he carries is the mission of eliminating demons that has been passed down for hundreds of years. And she was the biggest "evil" he was destined to kill. Shen Qingxian, you were my only light. But now, are you going to use this light to kill me with your own hands?