The war between the States has ended. Now, driven from Texas by carpetbaggers, former CSA Colonel Shamus O'Brien sets off for a new frontier - New Mexico. Here, where land is cheap, bandits shoot to kill, and rustlers rule the night, it takes more than one man to run a ranch. So he offers a partnership to his eldest son, Jacob, with equal shares going to his sons Sam, Patrick, and Shawn. Together, the brother's O'Brien will defend their homestead, the Dromore, in this violent, lawless land...and when necessary, administer their own brand of frontier justice.

Once, Frank Morgan had a wife and a future on the land — until a rich man with a grudge drove him out of Colorado. Since then, Morgan's taken up the one skill that always came easy — gunfighting — and drifted to a mining town in the New Mexico Territory. But there's nothing easy about two vicious gangs descending on the town and threatening to wreak havoc. With his reputation preceding him, Morgan is elected to stand in the outlaws' way. 

Orphaned at the age of seven and adopted by Indians, Jami Ian MacCallister grew into a man more at ease in the wilderness than among men. But when the westward strike drove him across the Arkansas Territory into Texas, he finally found himself a home — in the middle of a bloody war. Texans like Jim Bowie and Sam Houston were waging a fierce struggle against Santa Ana’s Mexican army and Jami MacCallister made the perfect scout for the fledgling volunteer force. 

The cattle town of Chugwater may not look like much to outsiders. But for Duff MacCallister and the determined settlers who’ve staked their futures here, it’s a land of opportunity. That’s why the whole town is fired up by the latest news. Young railroad developer Jacob Poindexter wants to run a rail line through Chugwater, making it easier to transport cattle. Everyone is on board with the plan — at first. Duff begins to suspect that Poindexter is only after the most valuable land, and he’s using strongarm tactics to force reluctant ranchers to sell.

When Conrad Browning's wife disappears in the untamed frontier, Conrad finds himself assuming the identity of his famous gunslinging father, Frank Morgan, to find her. But his hopes of rescuing Rebel are swiftly shattered - and now he's burning for vengeance, the old-fashioned way. So he fakes his own death and starts calling himself The Loner, becoming the deadliest gunfighter this side of his own father - ready to settle the score in blood and bullets....