Everyone's favorite football-headed city kid graduates from television to the big screen in this animated comedy-adventure based on the Nickelodeon TV series. Arnold (voice of Spencer Klein) and his good friend, Gerald (voice of Jamil Walker Smith), live in a tight-knit neighborhood in the middle of a big city. Like most of their neighbors, Arnold and Gerald love their community, and when they learn that Scheck (voice of Paul Sorvino), a wealthy and powerful developer, plans to buy up their neighborhood, tear down the buildings, and put up a massive shopping mall in its place, they decide something has to be done. While the adults come up with a dodgy scheme to blow up the streets in their neighborhood, Arnold and Gerald hatch a more practical scheme, with the help of Helga (voice of Francesca Marie Smith), who can't decide if she likes Arnold or hates his guts. Arnold and Gerald learn that their neighborhood was designated a historical landmark years ago, but can they prove it before Scheck moves in with his bulldozers? Hey Arnold! The Movie also features the voice talents of Jennifer Jason Leigh, Christopher Lloyd, and Dan Castellaneta.
by Mark Deming synopsis