They call it the Event--an unimaginable cataclysm that renders 600 million years of the worlds timeline into jumbled fragments. Our Earth is gone, instantly replaced by a new one made of fractured remnants of the past, present, and future. All exist alongside one another in a nightmare patchwork of time shards--some hundreds of miles long, and others no more than a few feet across.Crossing it sends them on a final quest spanning time, space, and dimensions. Only then will they learn if their mission will save their world--or destroy it.