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.
Abahachi, Chief of the Apache Indians, and his blood brother Ranger maintain peace and justice in the Wild West. One day, Abahachi needs to take up a credit from the Shoshone Indians to finance his tribe's new saloon. Unfortunately Santa Maria, who sold the saloon, betrays Abahachi, takes the money and leaves. Soon, the Shoshones are on the warpath to get their money back, and Abahachi is forced to organize it quickly.
Stodge City is in the grip of the Rumpo Kid and his gang. Mistaken identity again takes a hand as a 'sanitary engineer' named Marshal P. Knutt is mistaken for a law marshal. Being the conscientious sort, Marshal tries to help the town get rid of Rumpo, and a showdown is inevitable. Marshal has two aids—revenge-seeking Annie Oakley and his sanitary expertise.
Milo and Kida reunite with their friends to investigate strange occurances around the world that seem to have links to the secrets of Atlantis.
Chon Wang, a clumsy imperial guard, trails Princess Pei Pei when she's kidnapped from the Forbidden City and transported to America. Wang follows her captors to Nevada, where he teams up with an unlikely partner, outcast outlaw Roy O'Bannon, and tries to spring the princess from her imprisonment.
An old geezer recalls some of the antics of the citizens of his Western town, more wild and woolly than Tombstone or Dodge City. In this town, they shoot like Stormtroopers, the women seek new meat, and practical jokers abound.
Young Native American man Thomas is a nerd in his reservation, wearing oversize glasses and telling everyone stories no-one wants to hear. His parents died in a fire in 1976, and Thomas was saved by Arnold. Arnold soon left his family, and Victor hasn't seen his father for 10 years. When Victor hears Arnold has died, Thomas offers him funding for the trip to get Arnold's remains.
Two hapless explorers lead an ill-fated 1804 expedition through the Pacific Northwest in a hopeless, doomed effort to reach the Pacific Ocean before Lewis and Clark.
After the 1860s Wild West, a group of misfit settlers - including ex-doctor Phil Taylor, prostitute Belle, and homosexual bookseller Julian - decide they cannot live in their current situation in the west. They hire a grizzled alcoholic wagon master by the name of James Harlow to take them on a journey back to their hometowns in the East.
Sir Sidney Ruff-Diamond looks after the British outpost near the Khybar pass. Protected by the kilted Third Foot and Mouth regiment, you would think they were safe, but the Khazi of Kalabar has other ideas—he wants all the British dead. But his troops fear the 'skirted-devils, who are rumoured not to wear any underwear.