Zhang Xiaofan, a Mojin captain, was born in a rural area in eastern Henan. His parents died young and he was raised by Taoists. The mountains and rivers in the world hide the veins of dragons, the tombs are connected to the mysterious world, and the gates of ghosts frequently open. He takes dangerous risks with a weak sword to survive and for the truth. Lei Ye in Beimang Mountain obtained a bronze compass, strayed into a forbidden place, and uncovered the secret technique of "Tian Lei Guiding Acupoint". Travel with Lin Jinjing, a corpse exorcist in western Hunan, to explore ancient tombs, kill Yin soldiers, and break the Nine Palace Formation. The bronze sword comes out, suppresses ghosts and seals evil spirits, and the underground mysterious world quietly wakes up. The old Taoist guides and the man in black robe whispers that the seven calamities are coming and the world is in danger. He originally wanted to make money, but he was involved in a thousand-year catastrophe and faced life and death at every step. If you can keep the secret, you can keep the world.