Earp takes an interest in Mamie Perkins but there is something amiss in the relationship even though his friends hope they marry. Earp learns she loves another man who needs Earp's protection from Fog MacMurray's gang of cattle rustlers.
Earp kicks a crooked gambler out of Wichita so three saloon owners decide they are tired of the pressure. They decide to hire two gunmen to assassinate Earp but he gets wind of the plot. Earp brings in some special outside help to stop it.
Bill Slocum is accused by Duke Wilson of rustling. They take him in Wichita with plans to lynch him outside town but Earp stops them. Slocum is put on trial while Earp does some investigation which produces a major surprise for the jury.
Two Indians who have helped Earp previously, are being held by a renegade selling rifles to the Indians. They are in the Oklahoma Territory so the Army has asked Earp to go in as a US Marshal to rescue them. He does but as a doctor.
Earp returns to Wichita to find a crooked gambler has been given a saloon license by his deputies. Murdock wants the license revoked as Earp's desk is found to contain a $300 bribe framing Earp who has to give up his Marshal badge.
Earp closes a show because the men attending are being ripped off by the girls in it. The owner wants to get even with Earp. He decides to attack the stars of a competing play hoping to trap Earp on his own terms but Earp has other plans.
Big winners at the Keno House are being killed and robbed on the way back to the their camps. Earp is unsure if it is crooked casino owners or someone else doing it. A volunteer comes forward to solve it but Earp is then faced with a mob.
George Peschauer hates Earp and was kicked out of Ben Thompson's gang for his ruthlessness. He is trying to sell an Englishman a ranch loaded with rustled cattle but a nosy female hotel owner is trying to protect the likable Englishman.
The Kansas Kid is wanted by the Kingman Sjeriff for robbery, murder, and wounding one of his deputies. The Kid returns to his parents home where Earp arrests him. However, there is a question of his guilt and the intentions of the Sheriff.
Horses are being stolen around Wichita pushing the ranchers to want a necktie party. Their sights are set on a group of gypsies on Gus Cassen's property. Gus is an old friend of Earp who denies guilt but evidence forces his arrest for it.
A respected member of the community shoots a thief and is hailed as a hero. However, it is found that he himself is wanted for being in the James gang. Hs wife is coming to join him forcing Earp to arrest him when he hoped for a new start.
When a man is murdered in Wichita, Earp wants the Newton gang for it but Allen Pinkerton is interfering and more interested in recovering some stolen money. Due to Earp's actions, the Judge at Pinkerton's request takes Earp's badge.
A suffragette invited to Wichita by Murdock's wife to give a speech is interrupted by men supporting Senator Teague who is against women voting. Earp is caught between both sides trying to control the dangerous fights between them.
Earp is forced with the help of Mr. Cousin to go into the rough Bushwacker area to track down a man wanted for murder. The man says he is innocent and Earp begins to question his guilt when the man never attempts to kill him or Rr. Cousin.
Two ranchers have started a range war that is spilling into Wichita where innocent people could be killed. The granddaughter of one is involved plus she takes an interest in Earp. He is more concerned with a way to stop the war in Wichita.
Earp learns Masterson has dropped out of school and is a scout for the Army. He is being threaten by the killer Sgt. King over a woman using Bat as leverage to keep King away. Earp tries unsuccessfully to talk Bat into leaving her.
The Taylors open a café in Wichita but word that he is a cousin of criminal Mannon Clements causes strife for them and Earp who wants a peaceful town. When Taylor kills a man who threaten him, Earp has to prove Wichita has changed.
Earp takes the job of Dodge City Marshal. He arrives to find the Sheriff and his deputy under siege and the men on Front Street trying to kill him. He breaks the siege followed by going after the ring leader of the Big T outfit.
The Big T outfit is angry with Earp's attempt to tame Dodge City so they decide to ambush him with the help of Jim Kelley. Earp is pushing for four new laws to control the town and he needs Kelley's vote to break the tie on them.
The dance hall run by Dora Hand is a constant site of trouble between the buffalo hunters and railroad workers. She is unable to control them drawing Earp and her friend Kelly into while she also is the lead singer in the church choir.
Pete Albright tries to hire gunfighter Clay Allison to kill Earp to open up Dodge City. Allison won't take money but is willing to kill Earp. He loads his own ammo to prevent bad loads so Earp plays on his drinking and fear to defeat him.
The Judge's daughter has fallen for Earp but Earp realizes there is no future for them given his job. Neither Kelly or the Judge think it is wise for them to marry either. She sees what Earp is into when he takes on the top two ranches.
A newspaper man from New York comes to Dodge City to write about it expecting a wild and dangerous town. The town fathers are hoping for a $100,000 loan so Earp is trying to keep the town quiet but minor issues to the town keep occurring.
Thad Milburn is fed up with being mistreated and cheated by people in Dodge City causing him to wound two people and take refuge in a warehouse. Earp decides to investigate what happened before he and his deputies take any rash action.
Dora is forcing Kelly to sell his saloon so Albright and McGuire see an opportunity to not only buy it but to get rid of Earp. McGuire buys the saloon with complicated paperwork planning to frame Earp as part owner of the saloon.
As Jim Kelly and Dora Hand prepare to wed, Jim Rellance from Texas hopes to marry the older Dora. Dora tells him to find a younger girl and Earp tells him to leave Dodge City. However, he returns but not with the impact he hoped for.
Bat returns to Dodge City on the stage with the lovely Nellie Wright hoping to earn a star. He quickly ends up in a gun fight and learns Nellie is part of an outlaw gang but she wants out. Bat soon finds himself a prisoner of the gang.
New deputy Bat Masterson mistakenly shoots a drunk with an empty gun in the back to protect Hal. The man is critically wounded forcing Earp to wire for a surgeon from Fort Dodge while the man's family wants revenge by killing Bat.
The George Morris gang tries to take over Dodge City while Earp and Sheriff Bassett are gone. They succeed but Bat escapes capture to catch Earp. The two decide to return to Dodge City alone but the odds against them are not promising.
The Dutch Henry gang is rustling cattle and killed ranch hands on some of the smaller ranches around Dodge City. Sheriff Bassett is sick and Deputy Tillman is gone so Earp and Bat decide to go undercover into the gang rather take a posse.
Earp is not happy with Judge Tobin's habit of being liberal with sentencing men to hang. When a dealer he suspects is innocent is given the sentence, Earp concocts a plot to give the Judge a dose of his own medicine hoping to change him.
Two Cheyennes have been killed, which can start a new Indian war. The Cheyenne chief plans to attack Dodge City for revenge. Wyatt Earp has no other choice but bring the killers who were scratched by the Cheyenne woman to justice.