"You are now a discard. We have no further use for you in play. You are free to walk the Bounds, but it will be against the rules for you to enter play in any world. If you succeed in returning Home, then you may enter play again in the normal manner".
When Jamie unwittingly discovers the scary, dark-cloaked Them playing games with human’s lives, he is cast out to the boundaries of the worlds. Clinging to Their promise that if he can get Home he is free, he becomes the unwilling Random Factor in an endless game of chance.