Zhang Xiaofan (Li Yifeng), who along with childhood friend Lin Jingyu (Cheng Yi), are the sole survivors of a village massacre. The two are later accepted into the Qingyun Sect (Noble Sect), where they learn the ways of the Immortal Sword. Although he is hardworking and determined, Xiao Fan struggles to catch up to his peers due to his slow wit. One day, he acquires a "dementor sword" by chance when he was training in the mountains. During the martial arts competition held within Noble Sect, Xiao Fan enters the Top 4. Together with Lu Xueqi (Yang Zi) and company, they went to the Bat Cave in Mt Kong San to investigate the trails of the demonic sect. There, Xue Qi meets with danger but was saved by Xiao Fan, leading the two of them to become closer. Pivotal circumstances made Xiao Fan grow and mature. Along the journey, he also meets Bi Yao (Zhao Liying), daughter of the Ghost King. Their relationship also slowly grows and took a meaningful turn through these difficult times.