As Civil War bloodies the nation’s ground, Texas Rangers Harp and Long John O’Malley patrol a vast, unguarded range, picking off the brutal Comanche while protecting the families of soldiers off fighting at the front. Bullet by bullet the O’Malleys distinguish themselves as two of the bravest gunfighters to ever wear the Ranger’s star. At war’s end, the Rangers are disbanded, but Harp and Long John are not through fighting yet. They sign on with a cattle drive that will take them across the most treacherous and deadly stretch of the American frontier: the long trail from Texas to Sedalia. Beset by ruthless enemies inside and outside the camp, Harp and Long John aim dead straight for the future—where a great ranching fortune awaits back in a Texas they will change forever.