A mix of guns and mistaken identity leads to chaos in this satirical parody of William S. Hart's melodramatic westerns, finding Buster in the frozen north - "the last stop on the subway".
Ned Connors, a prospector, has a happy marriage with his wife, living in the hills, until fate brings a sick visitor to their shack. The guest, Dr. Martin, is cared for by Connors' wife, who falls in love with him. When Connors returns to the shack after striking it rich, he finds his wife and Martin together.
Amancio, the son of a judge, is the real master and lord of a town, and wants to impose his property criteria over the owners of ranches and horses. He stops the eviction of Eulalia’s family ranch, with the hidden intention of making her his lover. Silvestre, an outsider that arrives at the village, meets Eulalia by chance, after suffering a zulky accident. He will find trouble as well, as his horse doesn’t have a property mark.
A cowboy seeks revenge against the man who shot him in a bar-room brawl. While searching for him, he comes across a wild stallion that he is determined to capture and break, and unknowingly falls in love with the daughter of the man who shot him.
Bert Lyons returns to the Grainger spread from the "outside world" to find his former employer dead and the ranch in the possession of Calvert, a narcotics smuggler, and Blackie Lopez, a rustler who has his eyes on Molly Grainger, Lyons' sweetheart.
Chasing a steer across the border a cowboy meets a senorita and stays on making the Mexican Captian jealous. When the Captain plans to have the cowboy killed, the cowboy gets the Captain to agree to a contest between jumping beans. When the cowboy wins he says he will let the senorita decide between the two. But first he rides off to rescue another girl held by the hooded Night Riders and the Captain follows to back him up
Helen Martin takes her father's place when he is too ill to carry out his duties as Sheriff, and followed by Jim Grey, tracks down Blackie Wells, notorious 'bad man,' who has shot up a town. The trail leads over prairie and woodland, ending when Helen assumes the part of a dancing girl in the Last Chance saloon and learns the hiding place of Blackie and his associates.
College athlete Jimmy Brent is sent to Wyoming by his wealthy uncle John Morton, who has promised him $50,000 if he beats up Bob Phillips, who was once Morton's rival for Mary Allen. Jimmy finds Phillips, but when he falls in love with Phillips' daughter Gloria, he starts to think twice about performing his "job" for Uncle John. Matters are further complicated when a ranch hand tricks Phillips into thinking that Jimmy is the head of a gang of rustlers.
Returning from service in the A. E. F., Dale Garland is given a rousing reception by his townsmen. County political boss Nebo Slayter persuades the community to nominate Dale for sheriff--thinking he can be easily manipulated--against John Millard, the incumbent, who refuses political compromises. Dale easily wins and pledges to give the citizens an honest deal. Millard's daughter, Alice, who is Dale's childhood sweetheart, learns of Slayter's dishonest schemes and sees his men murder a moonshiner for whom they had been furnishing protection.
Cowhand John Marvin, in a cattlemen-vs-sheep-men range war, comes to the aid of a pretty and defenseless young sheepherder, Kate Bowers. This angers the other cattlemen, especially Palque Powell, who employs deceptive methods against Kate, while pretending to help her.
With the help of Red Barton (Wade Boteler), Phil (Jack Holt) makes a spectacular escape from jail. He obtains a parson's outfit from a pawnshop and shortly thereafter winds up in a barroom brawl. One of the other brawlers is Chuckwalla Bill (J.P. Lockney), the newly elected mayor of the town of Panamint.
When the other members of a stranded theatrical company pool their funds to return to San Francisco, Yvonne Laraby remains in Colt City, Nevada, at the request of Andrew Reed, an oil company foreman, to consider his marriage proposal. There she meets oil well owner Clay Truxall, a former acquaintance, who asks her to become his secretary. Yvonne falls in love with Truxall and persuades Reed to return to his sweetheart, Marie Curtis, whom he had deserted for Yvonne.
A ranch foreman helps his fiancé--the ranch's owner--who is having problems with a gang of cattle rustlers. Her girlfriend from back East is visiting her and has fallen for a cowboy who is secretly a member of the rustlers. He tells this to the gang's leader, who plans to use the owner's friend in a scheme to gain control of the ranch.
A United States marshal in the Southwest learns of a Mrs. Osborne, whose son and husband have been killed by raiders and whose daughter, June, has been taken captive. He orders Jack Laramie, his best man, to investigate the affair and arrest the guilty parties at any cost. Jack arrives at the local cafe and learns the identity of the outlaw gang and June's whereabouts. Meanwhile, Jack has rescued a child whose parents have been killed while crossing the prairie to stake out a homestead.