Stratification

This prequel to the Trade Pact Universe series begins in a time before the Clan had learned how to manipulate the M'hir to travel between worlds. Aliens have begun to explore the world of Cersi, upsetting the delicate balance between the Clan and the two other powerful races who coexist by set rules. And one young woman is on the verge of finding the forbidden secret of the M'hir - a discovery that could prove the salvation or ruin of her entire species.

On the distant world of Cersi, Om'ray Aryl Sarc and her supporters have been exiled from the rest of their people. Finding refuge in the mountains, they work to rebuild the ruined village of Sona, even as they try to discover what happened to the original Sona Clan. But Sona has a history among all three of Cersi's races - a history that may soon threaten the future of Aryl's newly founded clan.... 

Despite all good intentions, the lure of the Talent to move through space using the M'hir dimension is too much for the Om'ray of Cersi to resist. As the awareness of this talent spreads, all those Om'ray who are capable converge on the settlement at Sona. To prevent the disruption of the Agreement and the destruction that it would unleash, the M'hiray, as they now call themselves, agree to leave Cersi forever and try to establish their own haven within the Trade Pact worlds - only to learn that not everybody wants peace.