The Simpsons Movie is a 2007 American animated comedy film based on the Fox animated sitcom The Simpsons by Matt Groening. The film was directed by series veteran David Silverman and stars the series' regular cast of Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Hank Azaria, Harry Shearer, Pamela Hayden, and Tress MacNeille reprising their roles and Albert Brooks as the film's main antagonist, Russ Cargill, head of the Environmental Protection Agency. The film follows Homer Simpson, who irresponsibly pollutes Springfield's local lake, causing the Environmental Protection Agency, or EPA, to imprison the town under a giant glass dome. After he and his family escape to Alaska, they ultimately abandon Homer for his selfishness and return to Springfield to prevent the town's demolition by Cargill. Homer then works to redeem his folly by returning to Springfield himself in an effort to save it.