Marty McFly and Doc Brown return in a completely new 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 to save the Doc he knows from certain death! Featuring original cast member voices, original music and story input by trilogy writer and producer Bob Gale, this is the adventure fans have been waiting for!