Lin Xia, who delivers food, never expected that a heavy rain would awaken his yin and yang eyes and break into a terrifying night where a beautiful writer was hanged and hanged for her life. He used his ancestral copper coin sword to save Su Qinghe, but was forced to share the house with him. He also wrote his ghost-catching experience into a popular novel. Just when life was going crazy, the cold-faced female CEO Shen Nianhuan came to the door, threw out a piece of talisman and angrily accused him of ruining the overall situation of Xuanmen. Immediately afterwards, Liu Wushuang, a little Taoist with double ponytails, kicked in the door with a mahogany sword, took out the yellowed engagement book and shouted, "Brother, follow me back to Maoshan"! It turns out that every ghost hunt hides a shocking conspiracy: the cultists in abandoned hospitals use the souls of infants to survive, the blood sacrifice array in haunted houses in ancient towns where book fans are sacrificed, and even Su Qinghe's novels have become psychic mediums. Lin Xia was forced to get involved in Xuanmen disputes. Accompanied by three girls with very different personalities, Lin Xia grew from a dilettante who was paralyzed by evil spirits to a "soul keeper in the underworld" who frightened evil cultivators. And as the secret of the copper coin sword was gradually revealed, he also discovered that the massacre of his parents, the mysterious scar on Shen Nianhuan's neck, and the incomplete truth about Liu Wushuang's jade pendant all pointed to a shocking plan that spanned twenty years... The copper coin sword in his left hand killed the evil spirits in the world, and in his right hand he held three girls who were fighting for him. This time, he not only wants to rewrite his own destiny, but also wants to let the entire Xuanmen know - rules are dead, and the human heart is the blade that kills ghosts!