For all of known history, the Phoenix Express has delivered letters across the desert known as Time. Its couriers and phoenixes have turned the tides of future wars, saved the messiahs of faiths long forgotten, and changed the very seasons. But now, there is only one rider, one phoenix, and one final letter to be delivered.Elmira has served the Phoenix Express all her life and hasn't seen a message in over a decade. For fifteen years, she ran the post office of Penumbra, hoping to spend the rest of her days in peace. But when the Last Letter arrives, she must leave her daughter behind, or else unravel the world.With a sacred mission passed down the line, Elmira rides for the edge of Time...