The script for the movie Back to the Future, focusing on the relationship between Marty McFly, his father George, and his mother Lorraine. It describes how Marty inadvertently travels back to 1955 and finds himself interfering with his parents' initial meeting, thereby threatening his own existence. To correct the timeline, Marty must ensure that his parents fall in love at the "Enchantment Under the Sea" school dance. The text also introduces Dr. Emmett Brown, who has invented time travel and becomes Marty's unlikely ally in navigating the complexities of time travel and ensuring his own future.