Thomas Knight, an analyst with humanity’s Ministry of Interplanetary Affairs, is stationed on the Moon when a classified assignment propels him into the vast and turbulent reaches of Laniakea, the supercluster of galaxies that contains the Milky Way. He awakens on a distant asylum world, cared for by Liloi, a being of ancient and extraordinary lineage, who methodically rebuilds his fractured senses and memory. As his past surfaces in fragments, Thomas comes to understand that his presence here was no accident. Guided by a cast of remarkable companions, from interstellar brigades of the Evolved to eight enigmatic children of unimaginable capacity, he is drawn into a convergence of elemental forces, warring cosmic factions, and a purpose that has been millennia in the making. What awaits him at the end of the journey will alter the nature of existence itself.