At the centre of the Intersolar Commonwealth universe is a massive black hole. This Void is not a natural artefact. Inside there is a strange universe where the laws of physics are very different to those we know. It is slowly consuming the other stars of the galactic core - one day it will have devoured the entire galaxy. It's AD 4000, and a human has started to dream of the wonderful existence of the Void. He has a following of millions of believers. They now wish to Pilgrimage to the Void to live the life they have been shown. Other starfaring species fear their migration will cause the Void to expand again. They are prepared to stop the Pilgrimage fleet no matter what the cost. The Pilgrimage begins . . .