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Synopsis:
Nickelodeon's football-headed, untucked-shirted, city-living, stickball-playing kid toon star has his first feature length movie. Arnold lives in his grandparents' boarding house with a group of eccentric grown-ups who don't always get along. Together with the rest of the gang from the neighborhood, Arnold goes up against a powerful industrialist who invades the city and buys everything in sight so he can knock it down and erect a huge "mall-plex." Can Arnold and his best friend Gerald find the document that can stop the bulldozers?