On his first crossing through the warps, Seg discovers a world rich in vita – fuel to save his dying world. Cold, brilliant and desperate to prove himself as a Cultural Theorist, Seg breaks away from the recon squad sent to protect him, to scout out prime vita sources. But to find his prize he must face his biggest fear: water. Fiery and headstrong, Ama receives an ultimatum from her people’s tyrannical overlords: betray her own kind or give up the boat she calls home, forever.  When a wealthy traveler hires her as a guide, Ama thinks her prayers are answered – until a violent murder reveals Seg’s true identity. On the run, over land and water, hunted by a ruthless and relentless tracker, and caught in the schemes of a political powerhouse, Seg and Ama will have to strike an uneasy truce to survive. The fate of two worlds is in their hands.