
In one of television's first adult Westerns, the famous marshal puts his life on the line to maintain order, first in Dodge City, Kan., then in Tombstone, Ariz.

Earp tries to help an old friend, Bat Masterson, who is working as an Army scout and being threatened by a killer.

Earp must defuse a conflict between warring families after Ollie and Mildred Taylor set up shop in Wichita and become targets of a man angry at Ollie's cousin for killing his brother; tensions escalate into a deadly struggle, then a lynch mob.

Earp becomes the new marshal of Dodge City and immediately finds himself fighting off gunmen working for the Big T gang; determined to bring order to the city, Earp gathers local support as the gang holds the sheriff of Ford County under siege.

Someone is targeting big winners from the Keno House as they leave town, and Earp is determined to put a stop to it.