Australian sheep-man Morgan Lane comes to Montana looking for government-owned grazing land, and encamps his sheep at the boundary line (where the bad grazing ends and the good grazing begins) set up by the cattle barons to keep the sheep from nubbing away at the good grass. He goes to town, posing as a merchant, explains his Australian accent, and learns that Maria Singleton, owner of a large ranch, and Rodney Ackroyd (who never explains where he got his name), another ranch owner and Miss Singleton's fiancée, are the leaders of the cattlemen against the sheep-men. Romance tugs at Morgan and Miss Singleton, who quickly decides that Morgan has a much better name than Rodney (and other attributes) but the cattle-vs.-sheep feud keeps them apart. Until they meet in the street for a showdown gunfight following a disastrous clash between the cattle and sheep factions.

Following the surrender of Geronimo, Massai, the last Apache warrior is captured and scheduled for transportation to a Florida reservation...

On the day he gets married and hangs up his badge, lawman Will Kane is told that a man he sent to prison years before, Frank Miller, is returning on the noon train to exact his revenge. Having initially decided to leave with his new spouse, Will decides he must go back and face Miller. However, when he seeks the help of the townspeople he has protected for so long, they turn their backs on him. It seems Kane may have to face Miller alone, as well as the rest of Miller's gang, who are waiting for him at the station...