Programmer Li Mo was dragged into a strange hell space due to his workplace sins, and discovered that this was actually a modern version of the "Eighteen Levels of Hell" - each level was a terrifying copy full of death traps.
The survivors formed a prison cell and struggled to survive amidst the strange rules. However, Li Mo's prison cell No. 147 Was "marked" by the system, and he encountered extremely difficult dungeons: reflections in mirrors kill people, hospitals force people to forget their sins, deep-sea monsters guard ancient secrets, and casinos use memories and souls as chips...
As the pieces of the truth were gradually pieced together, Li Mo discovered that this so-called "hell" was actually a cruel screening experiment. And these "markers" are the most watched objects of observation in the experiment...
