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.

In Tennessee, 17-year-old Breckinridge Wallace knew the laws of nature. When his life was in danger, he showed a fearless instinct to fight back. Killing a thug who was sent to kill him got Breckinridge exiled from his Smoky Mountain home. Brutally wounding an Indian attacker earned him an enemy for life....

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. 

In 1848, Dooley Monahan, son of struggling Iowa pioneers, went off to to pick up a new milk cow. Young Dooley never came home. Now, nearly three decades later, Dooley Monahan has become an accidental legend, managing to plant a bullet in the chest of a dangerous outlaw. All Dooley really wants is to claim his reward at a bank in Phoenix and make his way north to a gold strike he read about in a newspaper.

Once upon a time in the Old West, Buck Trammel was a Pinkerton agent with a promising future. But after a tragic incident in a case gone wrong, he struck out for the wide-open spaces of Wichita, Kansas. Working as a bouncer at the Gilded Lily Saloon, he hopes to stay out of trouble. But soon enough, his gun skills are put to the test. The Bower gang shows up, turning a friendly card game with a Wyoming cattle baron into a killer-takes-all shooting match. Buck saves the cattle baron's life, but at the cost of two Bower men. That's when Deputy Wyatt Earp arrives. 

Shotgun Johnny Greenway thought he'd hit rock bottom when he lost his wife and son, hung up his badge, and hit the bottle. But a pretty young woman gave him a second chance. Offered him a job riding shotgun for the Reverend's Temptation Gold Mine. Gave him a reason to live. But even she can't save him when the Starrett gang tries to rob the gold—and Johnny kills their leader . . .

Two of the Johnstones’ most legendary heroes—the rugged mountain man known as Preacher and the Scottish clan rancher Jamie Ian MacCallister, here together for the first time—are forced to choose sides in a blood-soaked battle for the heart and soul of a nation divided. This is not the American dream they were looking for. This is a nightmare. A brutal, blood-drenched frontier war that two heroic men must fight and win—or one struggling nation will never come together. For liberty and justice for all.

Johnny Greenway was once a family man. A well-respected marshal who always played fair. Then his wife and son were killed by cutthroats. Johnny killed the killers. Then he hung up his badge and picked up a bottle. Now a shadow of his former self, he has nothing much to live for. But when he singlehandedly stops a bank robbery, he catches the eye of the banker’s daughter. She’s impressed by Johnny’s gun skills, and offers him a job riding shotgun. First he’ll have to stop drinking and clean up his act. But that’s not all that needs cleaning.

After a lifetime of robbing banks and holding up trains, Jimmy "Slash" Braddock and Melvin "Pecos Kid" Baker are ready to call it quits, though not completely by choice. Sold out by their old gang, they have to bust out of jail and pull one last job to finance their early retirement. The target is a rancher's payroll train. Catch is: the train is carrying a Gatling gun and 20 deputy US marshals who know they're coming. Caught and quickly sentenced to hang, their old enemy - the wheelchair-bound, bucket of mean, Marshal L. C. Bledsoe - shows up at the last minute to spare their lives.

After spending most of his young life driving cattle from Texas to Nevada, Will Tanner is ready to wash the trail dust from his throat. Maybe it was fate that brought him to the Morning Glory Saloon on the border of Indian Territory - or just plain bad luck - because right after his sits down three rough-looking characters walk into the bar with vengeance in their eyes, guns at their sides...and fingers on their triggers. The trio's target is the famous US Deputy Marshal Dove who arrested one of their kin - and who's sitting in the bar near Will Tanner.