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.
Not streaming on a subscription service in the US right now.
Starring Michael J. Fox, Christopher Lloyd, Mary Steenburgen, Thomas F. Wilson, Lea Thompson, Elisabeth Shue, Matt Clark, Richard Dysart, Pat Buttram, Harry Carey Jr.