In the underground city "Abyss" where light and shadow are difficult to reach, a hidden group feeds on nightmares and wanders on the boundary between reality and illusion. Xuan Yuan - a cursed "Shadow Chaser" who has been able to hear whispers deep in the rock walls since he was a child, but has never been able to identify their authenticity. He longed to unravel the thousand-year mystery that had trapped his tribe underground, but found that he had gradually become a vessel for those whispers. As strange phenomena occur frequently in the city, the group begins to split: some choose to obey the call of the ancient nightmare, while others try to awaken the forgotten light. Xuan Yuan is struggling in the intertwined reality and spiritual world. He must make a choice between sacrificing himself and saving his tribe. But under the abyss, the real mystery has not yet emerged - it is an existence that even nightmares dare not peek into. The novel uses confusing images and progressive mysteries to build a dark and tempting world, leading readers step by step into the endless abyss.
