A wall made of hundreds of meters of black rock imprisons humans in a triple ring-shaped cage. Everyone here has been bound by the invisible thread of fate for life since birth. The dignitaries in the upper city live by devouring their own kind, the common people in the lower city are waiting for death in numbness, and the "new king" at the top of the tower is feeding on despair.
Lin Yan was once the timid one, until his mother suddenly "disappeared" - neighbors said he never had a family, and all traces were erased from the file. Only he remembered the burn scar on his mother's left hand and the words "Farewell to the light on the tower." The moment his fear shattered, the world in his eyes began to emerge: the neighbor never blinked when he spoke, the bakery owner hid his scales, and even time stopped for the dead, leaving them trapped in the cycle of the day before death.
Those similar people called "spirit keepers" found him and told him a secret: without a thread of fate, they were the only ones who could see the truth, and they were also the existence that the new king was most afraid of. But when the new king senses a threat, the afterimages of the deceased become a deadly nightmare - they sneak into the dreamland disguised as their loved ones, and will kill them once they are seen through.
Lin Yan embarked on the road of searching for the truth with his natural reasoning ability. From the scrap pile in the lower city to the ossuary in the upper city, he pieced together the prophecy of the Book of Destiny amidst lies and bloodstains: "Those who have no line will break the line, and those who kill kings will inherit the throne." He once thought that his mother's soul could be redeemed, but he watched his dearest person turn into a nightmare and completely disappear in front of him to protect him; he once made an agreement with his companions to break the prison, but he could only watch them die one by one under the gears of reincarnation...
