In a distant ancient era, Daoist sects stand everywhere, humans and ghosts coexist, and power is intertwined with political intrigue. Our protagonist, Xiaren, is an orphan with exceptional talent. His unusual abilities draw him into the conflicts among the Daoist sects. Cold and detached, he sees the world in black and white and believes there is no absolute good or evil. After witnessing hypocrisy and slaughter among the Daoists, he gradually turns away from traditional righteousness.
Meanwhile, Xiaren's classmate and sworn rival Ziyun falls into the path of evil in pursuit of ultimate power. He masterminds a conspiracy called the “Nether God Project,” hoping to manipulate the spirit veins and upend the balance between the human and ghost realms. Xiaren is consequently dragged into an even greater struggle, where he clashes with Ziyun, Liu Xingyu, and other forces.
Liu Xingyu, a Daoist of the White-Trimmed Crimson Robes rank with unfathomable magical powers, once unleashed the “Black Sun Catastrophe.” She secretly joins forces with guardian clans to oppose Ziyun's faction, but her true motives remain a mystery, making her both an enemy and an ally to Xiaren. Li Jinglong, Xiaren's half-mentor and enemy, serves as an operative in the “Black Sun Case” and plays a crucial role in Xiaren's growth.
Amid a series of conflicts, Xiaren gradually awakens ancient secret arts, while Ziyun's “Nether God Project” comes to light. In the end, Xiaren joins forces with Liu Xingyu and others to unleash forbidden arts and fight back, exposing Ziyun's true aim: to resurrect an ancient evil god. The mystery of Xiaren's origins is also gradually revealed. He bears the mission of suppressing the evil god and is destined to play a vital role in the conflict between the human and ghost realms.