For seven hundred years, the Undying High Lord Milo has been building his Confederation, leading the Horseclans slowly across the lands once known as the United States, absorbing city-states and nomadic tribes alike, some by peaceful means, some by the sword. But now his enemies have banded together into an army far larger than Milo can muster. Led by an ancient and evil intelligence, this wave of unstoppable destruction is thundering swiftly down upon the Confederation forces. And Milo has no choice but to call upon all his allies, from the smallest troop of mountain warriors to the notorious pirate ships of the Lord of the Sea Isles, in a final desperate attempt to save the Confederation from seemingly certain doom