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 (TV series) show focused primarily on the Brown family, whereas the movies focused on the McFly family. The film's villain, Biff Tannen, also appeared frequently. In addition, relatives of McFly, Brown, and Tannen families were plentiful in the past or future parallel time zones visited. Unlike the films, which took place entirely in Hill Valley and the surrounding area, the series frequently took the characters to exotic locations. At the end of every episode, Doc Brown would appear to do an experiment, often related to the episode's plot. The first season also included post-credits segments with Biff Tannen telling a joke related