Lin Yu accidentally traveled to the world of "Swordsman". Fortunately, Feng Qingyang accepted him as his disciple and devoted himself to practicing swordsmanship in the quiet valley on the top of Mount Huashan. After more than ten years of sharpening his sword, he became a master of swordsmanship and then went down the mountain to pursue his career. When he first entered the martial arts world, he shocked everyone with his Dugu Nine Swordsmanship during the conflict between the Huashan Sect and the Songshan Sect. After that, he met like-minded friends, performed chivalrous deeds, and gradually became famous. However, Yue Buqun's secret calculations and the Sun Moon God Sect's temptations followed one after another. How will Lin Yu stick to his original intention and write his own legend in this turbulent world?