The movie takes place after the events of the first film. Marty McFly and Doc Brown travel to the year 2015 to ensure that Marty's son, Marty Jr., will have a bright future. However, upon arriving in the future, they discover that Biff Tannen (Thomas F. Wilson), a bully from Marty's past, has created a dystopian future by obtaining a sports almanac from a future version of himself.