A Big Problem Calls For A Big Head.

Arnold is Nickelodeons football-headed, untucked-shirted, city-living, stickball-playing kid toon star.

Arnold lives in his grandparents boarding house with a group of eccentric grown-ups who dont always get along.

Together with his cool-as-ice best pal Gerald, tough-as-nails Helga the girl who both hates and loves himand the rest of the gang from the neighborhood, Arnold tackles life in the big city the best way a wise-beyond-his-years fourth-grader knows how.

In this film, 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?.