Until one day, a mysterious orphan named Li Xing Yun was rescued by the hermit Uncle Yang by chance and worked under him to learn martial arts. A few years later, Li Xing Yun and his sister Lu Lin Xuan went down the mountain to practice martial arts. On their way, they met two friends, Ji Ru Xue and Zhang Zi Fan, and then happened to get the legendary Longquan sword. As a result, Li Xing Yun and Longquan Sword have aroused the covetousness of many sects, including Xuanmingjiao, Tongwenguan, Huanyinfang and Tianshifu.