Ancient mythical beast Qilin forged the seven demon swords including Xuanyuan and Chengying, and enlightened seven practitioners in the world to become the successors of the seven swords. At the same time, a snake demon in Changshou City, who has cultivated for thousands of years, mutilated living beings in order to increase his cultivation. The successors of the Seven Swords uphold the duty of protecting the peace in the world and fight against the snake demon.