The Simpsons movie sends the wacky yellow family on a wild ride after Homer pollutes Springfield Lake, leading to the EPA doming the entire town. Escaping the dome with his family, Homer becomes a fugitive while the rest grapple with life outside their Springfield bubble. Lisa seeks environmental solutions, Bart causes mayhem, Marge yearns for normalcy, and Maggie becomes a media darling. As the government closes in, Homer must redeem himself and save Springfield from a permanent dome-tomb.