When it was discovered that Earth could no longer sustain life, four planets were found suitable for the continuation of humankind. It has been twenty years since Sol and Lunelle left Earth and started over on Sonder, a planet quite unlike anything they've known. It is the perfect place to raise two young sons, until one day tragedy strikes their home. In the wake of loss, a new danger soon emerges on Sonder, Sol is tasked with uncovering what is...