Marty learns that Doc is trapped in 1885
and goes to the Old West to save him.
Back to the Future Part III (1990)
Directed by Robert Zemeckis
Written by Bob Gale
Starring Michael J. Fox, Christopher Lloyd, Mary Steenburgen, Thomas F. Wilson, Lea Thompson, Elisabeth Shue
Sequel to 1989's Back to the Future Part II
The final installment of this fantastic trilogy caps Marty and Doc's story with an epic adventure in the Old West. Their time in 1885 is just as good as the first two, ending my favorite trilogy of movies with a great finale.
Performance-wise, it is Thomas F. Wilson who steals the show as Buford "Mad Dog" Tannen, Biff Tannen's outlaw ancestor. He captures all of Biff's worst qualities while simultaneously playing an entirely different character. It's nothing short of awesome. Also, I love the heartwarming love story between Doc and Clara, played wonderfully by Mary Steenburgen. After two movies focusing on Marty, it was nice for Doc to have something as well.
The franchise ends with a beautiful sendoff, with Marty ending his time-traveling days to be with Jennifer and Doc blasting away through time with his new family and their new time machine. It's a sweet ending that tells us the adventure will never end, so long as we continue to enjoy it.