Back to the Future (franchise) of sporting events to make easy money. However, Doc talks him out of it and throws the almanac in the bin, where the 2015 Biff Tannen finds it. A sleeping Jennifer has been taken by police to her future home, needing Marty and Doc to retrieve her before returning to 1985. While Marty and Doc are at the 2015 McFly home, 2015 Biff steals the DeLorean time machine and gives the book to his 1955 self just before he goes to the dance at the end of the first film. When Doc and Marty return to 1985, they find that
Back to the Future: The Game car into the upcoming Hill Valley Science Expo. Meanwhile, Edna is picked up by Citizen Brown, and when she relates what Marty has done, Brown decides to help her to stop Marty's plan. At the Expo, Edna and Brown attempt to sabotage Emmett's display, but Marty discovers them in time. During this, he happens to learn that Edna was responsible for the arson of Kid's speakeasy. During the Expo, Emmett successfully demonstrates his flying car, just as Judge Brown arrives. Marty is able to help Emmett and Judge Brown reconcile their differences, with Emmett's father now accepting his son's science