Back to the Future Part II Back to the Future Part II Back to the Future Part II is a 1989 American science fiction film directed by Robert Zemeckis and written by Bob Gale. It is the sequel to the 1985 film "Back to the Future" and the second installment in the "Back to the Future" trilogy. The film stars Michael J. Fox, Christopher Lloyd, Thomas F. Wilson, and Lea Thompson. In the plot, Marty McFly (Fox) and his friend Dr. Emmett "Doc" Brown (Lloyd) travel to 2015, where bully Biff Tannen (Wilson) steals Doc's DeLorean time machine and uses it to alter history for the
Back to the Future him to 2015 to resolve a problem with their future children. The trio board the DeLorean, which has been upgraded with hover technology, and warp to the future. Writer and producer Bob Gale conceived "Back to the Future" after he visited his parents in St. Louis, Missouri after the release of "Used Cars". Searching their basement, Gale found his father's high school yearbook and discovered he was president of his graduating class. Gale had not known the president of his own graduating class, and wondered whether he would have been friends with his father if they went to high school