A new species comes to Bastion to challenge Uly's right to keep the system. Meanwhile, his troubles with the Ononguli Sphere have only just begun, as Dan has created the Congress of Wives.They also start the search for the people who originally built the ship Nubia. Did they survive? Are they really Human?And which of them, exactly, is the Lost Tribe?Book Five of the Corsac Fox, an exciting new military space opera series.