The game starts as MAZter is launching ZDaemon to play Doom. After playing for awhile, he suddenly realized that everything in the game became reality. Thinking of it as another bug of the game he decides to go forward to find an exit from this level and encounters a zombieman. Killing him, MAZter found that the wound he received in battle hurts. Unable to explain this thing, MAZter goes forward, killing zombies he encounters. His next tough battle was on the map, which resembles E1M8, with the Baron of Hell.