In 1861, New Mexico Territory is swept by change as the United States erupts in civil war. Federal troops are recalled to the east, leaving the way open for Confederates to invade New Mexico and capture its resources on the way to the ultimate prize: Colorado gold!

Three young people are caught up in the conflict: Alastar O'Brien, a Colorado miner turned soldier; Laura Howland, a young lady from Boston, recently orphaned; and Jamie Russell, a shop clerk from Texas serving as a quartermaster. The maelstrom of war brings them together in a clash of ambition, patriotism, and the simple need to survive.