Marty McFly, the protagonist of “Back to the Future,” travels back in time from 1985 to 1955 using a DeLorean car modified by his friend, Doc Brown. After ensuring his parents fall in love to secure his own existence, he returns to a better version of his life in 1985.
In the 1985 science fiction film “Back to the Future,” directed by Robert Zemeckis, Marty McFly, played by Michael J. Fox, is a typical American teenager who is accidentally sent back in time to 1955 in a time-traveling DeLorean invented by the eccentric scientist Doc Emmett Brown, portrayed by Christopher Lloyd. Upon arriving in 1955, Marty inadvertently prevents his parents, George and Lorraine, from meeting, putting his own existence at risk. He then embarks on a quest to ensure they fall in love to correct the timeline.
Throughout the film, Marty encounters younger versions of his parents and must navigate the social norms of the 1950s, all while trying to find a way back to the future. He enlists the help of the 1955 Doc Brown, who is initially skeptical but eventually helps Marty devise a plan to harness the power of a lightning bolt to power the DeLorean’s flux capacitor, the device that makes time travel possible.
Marty’s actions in the past lead to a series of changes in the timeline, which result in an improved family situation when he returns to 1985. His father is now a confident author, his mother is happier, and the family’s overall dynamics are more positive. Additionally, Marty’s nemesis, Biff Tannen, is no longer bullying the McFly family, as he has been put in his place by George McFly.
The film ends with Marty reuniting with his girlfriend Jennifer Parker, just as Doc Brown arrives in a now flying DeLorean, telling Marty and Jennifer that they need to go to the future to address an issue with their children. This sets the stage for the sequels “Back to the Future Part II” and “Back to the Future Part III,” where further time-traveling adventures ensue.