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In 1940, nine-year-old Carl Fredricksen idolizes famous explorer Charles F. Muntz.
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One day, Carl befriends a girl named Ellie, also a Muntz fan. She confides to Carl her desire to move her "clubhouse"—an abandoned house in the neighborhood—to a cliff overlooking Paradise Falls.
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Russell, a young "Wilderness Explorer" who visited Carl in his effort to earn his final merit badge, for assisting the elderly, becomes an accidental stowaway.
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Dug is a talking dog. hello
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When he accidentally injures a construction worker, the court deems him a public menace, ordering him to move to a retirement home. However, Carl resolves to keep his promise to Ellie by turning his house into a makeshift airship, using thousands of helium balloons.