Azonne Le carries the weight of a lineage stretching back to the dawn of time; every bearer of the Cyntaff rings is sworn to preserve the Balance between light and dark. But when a cosmic horror known only as the Nameless begins to devour entire worlds, even she cannot stand alone.

Across the galaxy, Roxanne Belmonte drifts through a capitalist dystopia—brilliant, restless, and wasting her potential. When fate throws them together during an extinction-level event, Azonne recognizes Roxanne as her successor—and will do anything to make that happen.

To survive, they must learn to trust one another and master a power older than creation itself—before the darkness consumes everything.