Can the past determine the future?

If Dr. Mark Cage had not accepted a seemingly innocent invitation, his life would not probably have changed so dramatically. If, in turn, Frank McAlester was not a hallucinated traveler wandering about both Sense and Nonsense, he would have never ended up crashing into the great walls of modern society.

Moving in an intricate city where everything was catchy and thought-impairing, they were forced to find some meaning within themselves. But how can one discover a spark of light in a byzantine maze of darkness?