A movie based on the popular animated series. After Grandpa Simpson gets a prophetic vision at a church service, the residents of Springfield find out that the EPA is plotting to isolate them from the world, for being the most polluted town in the world, and seals it inside a large dome. The Simpson family escapes and go on a journey to Alaska to try and stop the EPA from their plan to blow up the town. Along the way, Homer's bumbling forces Marge to break up the family and give up the quest, which leaves Homer to try and save his hometown himself!