The secret martial arts manual "Sunflower Manual" hidden in the palace treasury was stolen. The eunuch Gu Jinfu (played by Liu Xun) in charge of the East Factory led the thousand households Ouyang Quan (played by Jacky Cheung) and others to the south to investigate the resigned Jinyiwei Lin Zhennan, and at the same time recruited the "Five Mountains Alliance Leader" Zuo Lengchan (played by Yuen Wah) to coordinate from the outside. The Huashan School's senior disciple Linghu Chong (played by Xu Guanjie) and his junior sister Yue Lingshan (played by Ye Tong) were ordered by their master to reinforce Lin Zhennan, but they were helpless. After receiving Lin Zhennan's will, they fled. On the way, they met the leader of Shunfeng Hall Liu Zhengfeng (played by Wu Ma), the elder of Sun Moon God Sect Qu Yang (played by Lin Zhengying), and the Huashan School Feng Qingyang, and were passed on the music score of "Swordsman" and Dugu Nine Swords. All kinds of people gathered in the Miao territory for the "Sunflower Manual". Ouyang Quan and Zuo Lengchan were competing for credit, so they pretended to be Lin Pingzhi and mixed into the Huashan School. Linghu Chong meets Ren Yingying (Zhang Min) and Lan Fenghuang (Yuan Jieying) of the Sun Moon Sect, and gets their help because of Qu Yang's relationship. Gu Jinfu and Yue Buqun fight for the "Sunflower Treasure Book". Linghu Chong can't bear the fact that his fellow apprentices are implicated and uses the Dugu Nine Swords, and finally understands the true meaning of "Swordsman". This film is adapted from Jin Yong's novel of the same name.