Great Sky River is a powerful, fast-paced tale set at the center of our galaxy, within which lurks a black hole a million times more massive than our own sun. It is a future dominated by artificial minds - a future in which himans have about the same status that cockroaches do today in Manhattan. And the last remnants of humanity are on a desperate flight from extinction, crossing the barren wastes of a once-lush planet called Snowglade.