Under the surface of this seemingly ordinary world, there are countless silent "traces" hidden. They are not ghosts or demons, but "scars" left by some incomprehensible existence when it passes through reality, and that defy physical and cognitive logic. They are intangible but real, distorting light and shadow, breeding grotesqueness, and following a set of cold and strange rules.
However, as Shen Mo goes deeper into this world full of "invisible traces", a more desperate truth gradually emerges: these "traces" are not accidental, they are like a huge net, and he seems to have been the prey in the net. Only by seeing through the rules can you survive; but the deeper you look, the closer you are to madness and eternal coldness...