“Back to the Future” (1985) is a beloved science fiction adventure film directed by Robert Zemeckis and produced by Steven Spielberg. The film stars Michael J. Fox, Christopher Lloyd, Lea Thompson, and Crispin Glover.

The story centers around Marty McFly (Michael J. Fox), a teenager who is accidentally sent back in time to the year 1955 using a time-traveling DeLorean car invented by eccentric scientist Dr. Emmett Brown (Christopher Lloyd). Marty finds himself in his own parents’ high school years, where he inadvertently disrupts the timeline by preventing his future parents, George (Crispin Glover) and Lorraine McFly (Lea Thompson), from meeting and falling in love.

As a result, Marty risks erasing his own existence. He must work with the younger version of Dr. Brown to fix the timeline and ensure his parents’ romance blossoms as it should. To return to 1985, Marty needs to generate 1.21 gigawatts of electricity to power the DeLorean and harness a lightning strike to achieve this.