At the center of the galaxy is the Dreaming Void, an artificial black hole that may hold paradise within its walls. When a human named Inigo begins dreaming of what lies within the Void, the word spreads, triggering a religious pilgrimage into the Void and possibly a catastrophic expansion that threatens the peace of the Commonwealth Universe.

Araminta becomes the target of a galaxywide search by a government agent seeking to prevent the pilgrimage of a cult into the heart of the Void, while Edeard, the Waterwalker, finds himself faced with powerful new enemies.