The Market rules all, plotting the rise and fall of fortunes without human intervention. Mankind, trapped by a rigid hierarchy of wealth, bends to its every whim. To function, the Market must expand without end. The Earth is finite, and cannot hold it, and so a bold venture to the stars is begun, offering a rare chance at freedom to a select few people. But when the colony fleet is sabotaged, a small group finds itself marooned upon the tidally locked world of Nychthemeron, a world where one hemisphere is bathed in perpetual daylight, the other hidden by eternal night. Isolated and beset, the stricken colony members must fight for survival on the hostile planet, while secrets about both the nature of their shipwreck and Nychthemeron itself threaten to tear their fragile society apart.