Bat's brother Ed arrives in Dodge City broke and needing a job. Bat doesn't believe he has the ability to be a good lawman and doesn't want to hire him. Earp takes him on as a city deputy but soon learns Bat is right about Ed.
Lily Reeve known as the Kansas Lily arrives in Dodge City. After pulling a gun while gambling, she is arrested by Earp while Bat thinks she is a nice innocent lady. Neither man's opinion about her proves to be the truth as events unfold.
Gregarious old "Doc" Stevens travels the territory in his "store on wheels". What no one realizes is that this "store" actually hides a transmitter that enables him to send information to a gang of vicious criminals in the area.
Earp prepares for trouble when a group known as the Harlequins are expected to return to town. Although they disguise themselves as clowns, they have a deadly serious purpose--they robbed the Bank of Tombstone and want their comrade back.
The drovers find a lost boy, armed with Roman candles, who lies to them about being orphaned in an Indian massacre.