Back to the Future Part III (1990)

Stranded in 1955 after their previous adventure, Marty discovers that Doc Brown is stuck in 1885 after an accident with the DeLorean. Marty travels to the Old West to rescue Doc, only to find himself in a town run by Biff’s outlaw ancestor. As they work to repair the DeLorean and escape the 19th century, Marty and Doc must confront new dangers, including a deadly showdown, while trying to ensure their safe return to the future.