The final installment of the Back to the Future trilogy finds Marty digging the trusty DeLorean out of a mineshaft and looking up 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.
The notorious shootist and womanizer Quirt Evans' horse collapses as he passes a Quaker family's home. Quirt has been wounded and the kindly family takes him in and nurses him back to health against the advice of others. The handsome Evans quickly attracts the affections of their beautiful but sheltered daughter, Penelope. He develops an affection for the family but his troubled past follows him…