Two Army deserters turn to crime---with the aid of Gatling guns. Bo Braddock and Con Hawkins trade the Army life for lives of crime—with the aid of some high-powered Gatling guns. The pickings are pretty good around Silver City, especially since Fry and McCord's Sixguns are no match for the Gatlings.
Sarge accidentally kills the son of a powerful rancher while protecting a young woman from his unwanted advances. Unfortunately for Sarge, there were no witnesses to the struggle and the rancher uses his political influence to have a hanging judge appointed for the trial. Clay tracks the frightened woman through Albuquerque into the New Mexican mountains in hopes of bringing her back to serve as a witness as Sarge's trial.
Paroled killer Shad Billings returns after five years in prison, hoping to resume cattle ranching with his wife, Meg. While there have been false rumors linking Meg with Marshall Fry, Meg has actually been involved with a mine-guard from Tombstone named Trace Phelan. Fry urges Phelan to clear out but Phelan humiliates the unarmed Billings whom Fry then jails for his own protection. Then, instead of moving on as Fry hopes, Phelan vists the Billings homestead to kidnap Meg who now wants no part of him. Fry follows and guns down Phelan in a shoot-out. Billings and Meg are re-united.
Clay McCord arrests Jack Rivers for assaulting an Indian named Black Wing but Black Wing, distrusting the legal system, refuses to testify against him. Judge Wilkens releases Rivers who is then abducted by Black Wing and taken to an Indian village for some ""Apache justice."" Clay McCord rides out to the village to make sure that ""white man's law"" prevails.
Well-to-do Elmer Jackson is murdered and evidence points to his nephew, Phil, who has fled town. Clay McCord suspects Phil's sister, Martha, knows his whereabouts though she denies this. Clay secretly follows Martha out of town but she knocks him out with a rock to the head and rides on to a cabin where she meets her lover, outlaw Tweed Younger. Tweed killed Elmer Jackson but made it look as if Phil had. Phil's now a prisoner in the cabin. Double-crossing Martha shoots Tweed and is about to kill Phil when McCord arrives on the scene.
Simon Fry arrests Jason Harris, the marshall of Hondo, for complicity in some robberies. Harris could clear himself but remains silent to protect his guilty wife, Laurie. Laurie's fallen for a man named Johnny Dustin and together they plan to get rid of Harris. Dustin betrays Laurie, however, and Fry and Clay McCord then see to it that the guilty are caught and punished. Fry then offers the exonerated Harris a job in the new town of Yorba Linda.
Clay is curious and concerned when Chief Marshal Fry insists on personally handling the investigation into the activities of a pair of swindlers, one of whom happens to be a beautiful young blonde. Clay learns that the young woman is the daughter of woman who spurned his love more than twenty years ago and the deputy fears that Simon may be allowing his personal feelings to cloud his professional judgment.