Su Jiuer is the last nine-tailed fox in Qingqiu. In order to avoid the catastrophe, she transformed into a human being and joined the world's number one sword sect, becoming the most inconspicuous disciple of the Infinite Sword Master Shen Hanguang. She has a mediocre spirit and a very poor understanding. She is a beautiful loser in the eyes of her peers. No one knew that she was enduring the pain of Lingchi under the pressure of heaven every moment. No one knows that the void fox tail behind her is her only chance of survival and her most vicious curse. When the first tail broke, severe pain tore through her soul, and she saw the light of the sword opening the heavenly gate in the illusion. When the second tail broke, her cultivation regressed for a hundred years, and she realized the moment of killing the soul in a pool of blood. ... She stepped to the top of the sword by injuring herself. Every time she comprehends a lost peerless sword spirit, it means that she is one step closer to death. The pain of a broken tail corrodes the bones and burns the heart. The only comfort was her master who was as cold as the snow on the mountain. He would wipe the blood off her sword, and when she was shaking from pain, he would use his cool fingertips to bring a touch of soothing spiritual power. He said: "Jiu'er, my teacher is here." These three words were the only light in her hellish path of cultivation. Until her eight tails were cut off, her cultivation reached the realm of transformation, and she pulled out the ninth sword that shouldn't exist. The meaning of the sword is called Guixu, cutting off all cause and effect. And the sword that she had wiped countless times with her own hands pointed at her only light - her master, Shen Hanguang. It turns out that the natural disaster is not the thunder punishment, but him.