Sword Song Across the Land tells the story of Shen Jingchen, a young man from a secluded valley, and his journey through the martial world. Raised from childhood by the reclusive master Ye Wenxin, he had lived a peaceful life with his master on Mount Zhongnan. But when the Black Wind Cult launched a surprise attack, he witnessed his master's brutal death. From then on, he carried a blood feud and entered the treacherous martial world with the complete manual of the Flowing Cloud Swordplay.
Still naive but steadfast, Shen Jingchen has just entered the martial world when he encounters the gentleman Su Muzhe in Qingshi Town. The two are bound together by the Black Wind Cult: Su Muzhe is investigating the cult's conspiracy with other forces and holds the key token, the Darksteel Command; Shen Jingchen is sworn to avenge his master. They travel west together, meeting the upright constable Li Chengfeng along the way and facing roadside bandits, the Black Wind Cult's pursuers, and trials that bring them to the brink of death.
The Black Wind Cult's shadow looms over the martial world. Its main headquarters lies hidden in the Western Regions, and its power is vast and its methods ruthless. Through his trials, Shen Jingchen gradually sheds his youthful inexperience, and his swordsmanship grows ever more refined. Fighting side by side with Su Muzhe also teaches him that the martial world is about more than grudges: it is about protection and honor. He must not only slay his enemy, but is also drawn into a shocking conspiracy that threatens the entire martial world. The road ahead is long. Can this young swordsman pierce the darkness with his sword and make justice shine?