After the Civil War, ex-Union Colonel John Henry Thomas and ex-Confederate Colonel James Langdon are leading two disparate groups of people through strife-torn Mexico. John Henry and company are bringing horses to the unpopular Mexican government for $35 a head while Langdon is leading a contingent of displaced southerners, who are looking for a new life in Mexico after losing their property to carpetbaggers. The two men are eventually forced to mend their differences in order to fight off both bandits and revolutionaries, as they try to lead their friends and kin to safety.

Legendary marshal Wyatt Earp, now a weary gunfighter, joins his brothers Morgan and Virgil to pursue their collective fortune in the thriving mining town of Tombstone. But Earp is forced to don a badge again and get help from his notorious pal Doc Holliday when a gang of renegade brigands and rustlers begins terrorizing the town.