Lucas McCain and his son Mark arrive in North Fork, New Mexico. Looking to start a new life, they come across a ranch to their liking, which is for sale. Lucas enters a Turkey Shoot in hopes of winning the down payment for the ranch. Jim Lewis, the man who runs North Fork, has bet on Vernon, a young gun he brought in, to win. When talk of Lucas' reputation back in the Nations circulates around town, Mr. Lewis gets nervous and he makes trouble for Lucas by threatening Mark's life.

Two hired hands of a wealthy cattleman, who has been using the ranch for grazing his cattle, demand that Lucas move out. When Lucas refuses, he is beaten and dragged and then the ranch house is burned down. They left Lucas and Mark with the burning house and rode off with Lucas' rifle. Leaving Mark to tend to the animals, Lucas tracks them down and confronts their boss, Mr. Jackford.

Micah Torrance, a once famous lawman, is introduced as a drunken derelict, who stumbles into North Fork. Micah, nursing an arm crippled in a gunfight, is hired by Lucas to help out at the ranch. Three outlaws ride into town looking for revenge against Micah. When they kill the sheriff, it's up to Lucas and Micah to protect North Fork. Micah becomes North Fork's full-time Marshal.

When his employer begins to suspect him of embezzlement, bookkeeper Asa Manning decides to hire a professional gunman to take care of the problem.

A dance hall singer asks Lucas to care for her daughter in an effort to hide the baby from her self-righteous, bigoted father.