In the past, the ancient divine beast Qilin forged seven swords, including Xuanyuan and Chengying, and inspired seven practitioners in the world to become the heirs of the Seven Swords. At the same time, a snake demon in Changshou City who has practiced for thousands of years, in order to increase his cultivation, mutilates living beings. The Descendants of the Seven Swords, adhering to the duty of guarding the peace of the world, fought the snake demon on the Black Devil Cliff and sealed it.