On a fortress world at the edge of civilized space, a battered Roman legion stands between the Civic Imperium Directorate and a coalition determined to break it. Cut off, outnumbered, and running out of time, the defenders of the Last Wall must hold against armor, infantry, betrayal, and the slow certainty that no rescue may come.

For Rome, duty is not a slogan. It is the line between civilization and ruin. And on this world, that line is made of blood, iron, and men too stubborn to die politely.