The Simpson family celebrates their 15th anniversary with another hilarious season of animated misadventures. This year, the power plant fires Homer (Dan Castellaneta) and the library's bookshelves are barren, so it's up to Marge (Julie Kavner) to teach the kids about history. Also, Lisa (Yeardley Smith) gets revved up to run against Nelson (Nancy Cartwright) for Springfield Elementary School class president.