In 1867 Eden Kane left her job at the Smithsonian and headed West, intending to become an agent of the government. Instead, she became a leader to the Brethren of the Sky. In 1868, she faced her greatest danger as the former Confederate General Hood plotted to become the overlord of the West and destroy Washington D.C.
Now, with air-warships at her command, Eden is a power to reckon with. As the forces of a weak government and scheming robber barons converge on the frontier, she must find what course she intends, and hold it. With her constant companions, the Experimentals Zenobia Santiago and Diamondback Sally, Eden must try and carve out her destiny in the West - the Graveyard of Empires.