Gu Cheng transmigrated into a world of immortal heroes and strange tales, becoming the eldest son of the loyal and brave Marquis Guan's mansion. To avoid assassination attempts by his stepmother and leave the capital city, he joins the Night Justice Bureau, which punishes demons and ghosts. In this mysterious world of rivers and lakes, where demons abound, the court is corrupt, martial arts families vie for power, and heroes emerge. It's a world where gods and demons roam freely, and the strongest are called "Great Sages." "My name is Gu Cheng, and I stand for integrity." "Since there are no gods or Buddhas in this world, then I, will become the god!"