The final in the Back to the Future casts off the dizzying time travel of the first two films for mostly routine comedy set in the Old West. Marty travels to 1885 to rescue Doc and put the past, present and future on track so they can all get back to where and when they belong. Meanwhile, the Doc, who has fallen in love with a local woman, realizes he can';t hide in the past from the problems he has caused to the time flow in the previous two adventures. .