When 2 outlaws shoot and kill a storekeeper and his young employee, Matt sets out on to the prairie to find the killers.
When one of the killers (Red Lime) dies from a gunshot wound from Marshall Dillon's gun, the other outlaw (Joe Lime) vows revenge onhim for killing his brother
When Matt returns back to Dodge without the men and with a fever, Doc giveshim something to help him rest and fight the fever.
While Matt is resting, Chester cleans Matt's gun. Chester removes all of the bullets from the chambers, but beforehe can put the bullets back intothe gun,he gets a message that Doc wants to seehim inhis office
While Chester is up in Doc's office, the other killer rides back into Dodge wanting revenge for Matt killing his brother. He tells Carl the stable man that he plans to kill Matt.
Carl the stable man tells Miss Kitty that the outlaw Joe Lime was now in Dodge and is gunning for Matt. Miss Kitty awakens Matt from a state of fever to warn him that Joe Lime is after him.
Matt finally finds Joe Lime hiding in the horse stables.
A fevered Matt and the outlaw have a shootout at the stables, but a strange twist of fate occurs. While Matt is suffering from the ill effects of the fever, Joe Lime grabs Matt's gun. He attempts to fire several shots at Matt, but since Chester had removed the bullets from Matt's gun and did not place the bullets back into Matt's gun, the gun does not fire.
Chester hears the shooting and takes Joe Lime into custody.
Jim is murdered and his horses stolen. After burying Jim, Matt and Chester go looking for Tebow, the man who did it. The trail they pick-up leads to a Kiowa camp where they find the stolen horses.