In dusk-shrouded Qingshi Town, the orphaned boy A Liang makes a living chopping wood and carrying water. He harbors a dream of becoming a sword immortal, riding his sword through the martial world. Only drawing swords with charcoal on the stone pavement can ease the longing in his heart. One day, Li Laosan, the second-in-command of Black Wind Stronghold, and his men seize an abandoned temple and bully the neighbors. Though A Liang is outnumbered, he bravely steps forward. At the critical moment, a green light bursts from his palm. His heaven-gifted sword bones awaken, astonishing everyone.
Seeing that A Liang is a prodigy in swordsmanship, Li Laosan tries to force him into submission by threatening the neighbors. Just as A Liang is caught in a dilemma, the white-haired old man who guards the temple suddenly appears. With his formidable cultivation, he drives off the villains and resolves the crisis. Learning that A Liang was born with sword bones, the old man takes him as a disciple and teaches him the true essence of the sword. From then on, the ordinary boy of Qingshi Town leaves behind his life of mere survival and embarks on a martial journey founded on a righteous heart and his sword bones. Far away, conflicts and hidden realms are already quietly taking shape among the dusky mountains.