Lu Chen, a young man from Shixi Village, accidentally awakens a mysterious black stone left behind by his father while rescuing someone in a mining valley. A soul mark is subsequently imprinted on his right arm. He joins the Qinglan Sect and, through life-and-death trials, refines beast souls and cultivates powerful techniques, gradually uncovering the secrets of the soul mark. His childhood sweetheart, Xue Zhiyao, is taken to the Spirit Realm after awakening her Ice Spirit Root, leaving them separated in two different realms. Facing dangerous demonic beasts and the hardships of cultivation, Lu Chen takes up his sword and seeks immortality, determined to control his own destiny and reunite with her one day.