After lightning strikes the clock tower, Marty McFly (Michael J. Fox), who is stranded in 1955, takes "Doc" Emmett Brown (Christopher Lloyd) home. He explains to the Doc of that era that Doc's future self and the DeLorean time machine were accidentally sent back to the year 1885. Marty learns from a letter written by Doc in 1885, that the DeLorean is hidden in an old mineshaft. The letter instructs Marty to find the car, return to 1985, and then destroy it in order to prevent further disruption of the space-time continuum.