Llynfall is ash. The ADF must ready its member worlds for war.

Three months after the Dominion destroyed her home settlement of Llynfall, engineer Aimee MacKenna arrives on the desert planet Mor-Du to train Blair Redpath's ragtag fighter recruits. Her mission: transform this scrappy band of dust-bitten warriors into a fleet that can stand against the Thalassian Dominion.

But engineering isn't what it used to be. The Sidhe technology that transported her from the Emperor's dreadnought has left its mark, and her once-reliable skills now spark with impossible power. As she struggles to understand these new abilities, she can't shake the feeling that the Dominion's plans stretch far beyond Llynfall's destruction.

Trapped between duty to Blair's fighters and the weight of her guilt, Aimee must find a way to face an enemy who knows her better than anyone. But in Mor-Du's endless dunes, ancient powers are stirring. And Aimee's new abilities may be the key to understanding why the Emperor truly needs her alive.

"The Bringer's fire cleanses all." — Sidhe oathstone, Mor-Du, estimated ~20,000 BCE