Yang Guo, an orphan, is taken by Guo Jing and Huang Rong to learn martial arts in Quanzhen Sect. But he is bullied, so he becomes a disciple of Xiaolongnü from Ancient Tomb Sect. Yang Guo and Xiaolongnü fall in love, but misunderstandings drive them apart. Yang Guo searches for Xiaolongnü and fights against his senior, Li Mochou. They finally reunite and decide to marry, but their love is not accepted by society, and they face many challenges. Yang Guo also learns the truth about his father's death and his own identity. After a series of trials, Yang Guo becomes a legendary hero.