The year is 2074 and the population of Earth is now at 14 billion. Humanity faces an extinction that they can't stop. Resources are dwindling and tensions run high over the little that is left. That is, until an unknown force steps in with a solution that humans thought they had grown out of: natural selection.

Mark Richards was on the verge of a literal death sentence, but a stroke of luck swept him and every other person on Earth to a mysterious dungeon where humanity will be culled. Humanity will be put on an equal playing field and only luck and the ability to adapt will save them. All they have to do is make it to the 25th floor and survive hordes of monsters, traps, and each other. Mark will have to level up and turn the system to his advantage to survive. If he can.