Foresight is a map. But what happens when the road you take is the one you were warned against?

Elara Hale is not just a prodigy; she is a refugee from history. Since childhood, she has carried the vivid memories of other lives—a Norse shipwright, a scribe, a healer—which she organizes within a meticulous "Mind's Labyrinth." But when her extraordinary mental discipline leads her to a terrifying discovery—a parallel reality that exists just one day ahead—she realizes her gift is not a memoir. It is a warning.

Now, bound to a twenty-four-hour horizon of foresight, Elara must translate the chaos of prophecy into the meticulous Calculus of the Keel—the unglamorous, ethical framework required to hold a splintering world together.

At university, her commitment to intervening earns her the attention of Kael Armitage, a brilliant scientist who carries his own erased history and is building a device that listens for the very temporal fractures Elara inhabits. Their bond deepens, forged not in romance but in the shared discipline of maintenance—a love that is a brace, not a boast.

As a subtle, malignant force—the Null—begins to consume coherence itself, using Elara's love as a sensor and Kael's face as a mask, their quiet vigilance is shattered. Elara must now master the Geometry of Refusal to turn her exposed vulnerabilities into a weapon. They devise a trap, a paradox built on logic and mundane labor, to force the Null to feed on its own reflection. But to set it, Elara will have to confront the ultimate cost of her knowledge: the inevitable loss of the very gift that drives her.

In the final reckoning, Elara and Kael must execute the Unsung Invariant—the plan that demands the ultimate sacrifice of spectacle for survival. The city will be saved, but only if they can trust the quiet, unheroic work to be stronger than any catastrophe.