Ling Chen, an orphan from a small town on the border of the mortal world, was regarded as a loser in cultivation due to his inability to absorb spiritual energy normally due to his innate "extreme pulse". But he unexpectedly discovered that he could communicate with the "remnant souls" between heaven and earth. Most of these remnant souls were left behind by the fall of ancient great powers and contained lost techniques and secrets. His growth path is not simply to improve his realm, but to explore a unique path of "proving the Tao with his soul" by analyzing the remaining souls and integrating their power.