An aging group of outlaws look for one last big score as the "traditional" American West is disappearing around them.

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.

A recently released ex-convict and his loyal wife go on the run after a heist goes wrong.

In the 1930s, bored European-American waitress Bonnie Parker falls in love with a European-American ex-con named Clyde Barrow and together they start a violent crime spree through the country, stealing cars and robbing banks.

After the death of a United States Senator, idealistic Jefferson Smith is appointed as his replacement in Washington. Soon, the naive and earnest new senator has to battle political corruption.

The final installment finds Marty digging the trusty DeLorean out of a mineshaft and looking for Doc in the Wild West of 1885. But when their time machine breaks down, the travelers are stranded in a land of spurs. More problems arise when Doc falls for pretty schoolteacher Clara Clayton, and Marty tangles with Buford Tannen.

Bret Maverick is a gambler who would rather con someone than fight them, and needs an additional $3k in order to enter a winner-takes-all poker game beginning in a few days. He joins forces with a woman with a marvelous Southern accent, and the two try and enter the game.