Marty McFly and Doc Brown return in a completely new Back to the Future adventure. Six months after the events of the third film, the DeLorean Time Machine mysteriously returns to Hill Valley - driverless! Marty must go back in time and get aid from a resistant teenage Emmett Brown, or else the space time continuum will forever be unraveled! Features Special Appearance by Michael J. Fox! Christopher Lloyd and Claudia Wells return to voice Doc Brown and Jennifer Parker Collaboration with Bob Gale Film, Trilogy Co-Creator/Writer Back to the Future’s “first families.” The McFlys, the Browns, and of course, the Tannens – all play key roles.