Among the ashes of a dying world, an agent of the Commandment finds a letter. It reads: Burn before reading.

Thus begins an unlikely correspondence between two rival agents hellbent on securing the best possible future for their warring factions. Red belongs to the Agency, a post-singularity technotopia. Blue belongs to Garden, a single vast consciousness embedded in all organic matter. Their pasts are bloody and their futures mutually exclusive.

They have nothing in common—save that they're the best, and they're alone. Now what began as a battlefield boast grows into a dangerous game, one both Red and Blue are determined to win. But as their correspondence deepens into something more intimate and their connection becomes undeniable, they must grapple with the impossible: loving your enemy across time and space.

Part epistolary romance, part mind-blowing science fiction adventure, this dazzling story unfolds bit by bit, revealing layers of meaning as it plays with cause and effect, wildly imaginative technologies, and increasingly intricate wordplay.