More than ten years have passed since a regiment of Yankee northerners under the command of Andrew Keene was mysteriously transported from the Civil War and found themselves on a hostile alien planet. But now it seemed as if everything the Lost Regiment had fought and died for in the past had been in vain. The implacable war against the hordes played its role and exhausted the people, and the last siege of the Bantag Horde undermined the will of the Republic to fight. Keane resigns from his post when the Government of the Republic announces separate negotiations. Bringing the remaining veterans of the 35th Manx to his side, he plans a campaign that will take the Lost Regiment into the heart of the Bantag Empire to destroy their ability to wage war once and for all. The result of this suicide mission will decide the fate of the human race in a world far from Earth.