In 1985, in the fictional town Hill Valley, California, teenager Marty McFly and his girlfriend, Jennifer Parker, are chastised by the school principal for lateness.
Marty auditions for the Battle of the Bands, but is rejected for being too loud.
At home, Marty's father George is bullied by his supervisor, Biff Tannen, while his mother Lorraine is an overweight, depressed alcoholic.
Lorraine recalls how she met George when her father hit him with his car.