Back to the Future 1985

"Meet Marty McFly. He's broken the time barrier. Busted his parents' first date. And, maybe, botched his chances of ever being born."

A teenager is accidentally sent 30 years into the past in a time-traveling DeLorean invented by his friend, Dr. Emmett Brown, and must make sure his high-school-age parents unite in order to save his own existence.