The Lin family, a martial arts clan, is suddenly wiped out. Its lone survivor, Lin Yufeng, is adopted by a reclusive master. After learning formidable martial arts, he enters the martial world carrying a deep blood feud.
Su Yao, the daughter of a wealthy Jiangnan merchant, cares more for the martial world than for riches. She sneaks into Emei to study martial arts and is lively and brave. She meets Lin Yufeng during a bandit attack, and from then on they travel the world together.
Dark currents stir beneath the martial world. Zhao Tianba, leader of the Bloodfiend Alliance, grows ever more ambitious and seeks to seize martial arts manuals and rule the land. While investigating the truth, Lin Yufeng and Su Yao meet the mysterious swordsman Li Yichen, and the three join forces against the Bloodfiend Alliance.
Their journey is fraught with danger, and Zhao Tianba's schemes never cease. Su Yao is gravely wounded saving Lin Yufeng, who struggles to find medicine for her. Their feelings for each other deepen.
At last, they learn that the Bloodfiend Alliance plans to hold an evil ritual, and the three venture into the tiger's den. Lin Yufeng points his sword to the heavens, Su Yao's Emei daggers gleam coldly, and Li Yichen stands ready with his long sword. The final battle between good and evil is at hand. Can they protect the peace of the martial world amid the sword shadows and distant horizons?