Ben Wheeler learned his law in a Yankee prison, but he learned to be a gunman on the Chisholm Trail. In prison he met the lovely Quaker nurse Abigail Carter, who agrees to become Wheeler's bride when he is paroled after the Confederate surrender. At the urging of his mentor, Angus Finlay, the couple moves to San Miguel, Texas, and stake out a small claim. But then a blaze of bullets takes away his bride in a bank holdup, and Wheeler vows to find her killers. He signs on as a trail hand on Finlay's cattle drive up the Chisholm Trail, pursuing justice frontier-style.