The city of Charisat, a tiered monolith of the Ancients' design, sits on the edge of the vast desert known as the Waste. Khat, a member of a humanoid race created by the Ancients to survive in the Waste, and Sagai, his human partner, are relic dealers working in the bottom tiers of society, trying to stay one step ahead of the Trade Inspectors. One part "Tomb Raider", one part "Dune", all parts classic Martha Wells.