Back To The Future (1985) Theatrical Trailer - Michael J. Fox Movie HDbr br br A teenager is accidentally sent 30 years into the past in a time-traveling DeLorean invented by his friend, Dr. Emmett Brown, and must make sure his high-school-age parents unite in order to save his own existence.br Director: Robert Zemeckisbr Writers: Robert Zemeckis, Bob Galebr Stars: Michael J.