In his previous life, Nie Li was too weak to safeguard his home when it mattered most. Driven by solemn resolve, he rose to become the mightiest Demon Spiritist and reached the apex of the martial world. Yet, he perished in combat against the Sage Emperor and six deity-ranked beasts. His soul was subsequently returned to the time when he was merely 13 years old. Despite being the weakest student in his class with the lowest aptitude, possessing only a red soul realm that was feeble to boot, he resolved to cultivate at a pace surpassing all expectations, leveraging the extensive knowledge he had gathered in his former life. He also vowed to assist those who had died honorably in his past life to advance their training more rapidly. His goal is to shield the city from the impending doom of devastation by demon beasts and to avert its prior fate of destruction. He intends to save his lover, friends, family, and fellow citizens who perished during the beast assault or its subsequent aftermath. Furthermore, he seeks to annihilate the so-called Sacred family, who had arrogantly shirked their responsibilities and betrayed the city in his previous life.