Plot summary: At the end of the Yuan Dynasty, it was widely rumored in the martial arts world that whoever possessed both the Dragon Slaying Saber and the Heaven Defying Sword at the same time would uncover the great mysteries hidden within, thus sparking a competition in the martial arts world for the Dragon Slaying Saber and the Heaven Defying Sword. Under orders from his master, Zhang Sanfeng, the third disciple of Wudang, Yu Daiyan went down the mountain to help the weak and poor, but unfortunately got caught up in the battle between the Haiyan Gang and the Haisha Sect over the Dragon Slaying Saber, and was disabled by someone's treachery...