<P> Carl and Ellie grow up, get married and live in the restored house . Carl sells toy balloons at the zoo where Ellie works . After Ellie suffers a miscarriage and they are told they cannot have a child, the couple remembers their childhood dream of visiting Paradise Falls . They save for the trip, but repeatedly have to spend the money on more pressing needs . Finally in the present day, the now elderly Carl arranges for the trip, but Ellie suddenly falls ill and dies . </P> <P> By 2009, Carl still lives in the house, stubbornly holding out while the neighborhood homes are torn down and replaced by skyscrapers . 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 . 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 . </P> <P> After surviving a thunderstorm, the flying house lands on a tepui opposite Paradise Falls . Carl and Russell harness themselves to the still - buoyant house and begin to walk it across the mesa, hoping to reach the falls before the balloons deflate . Russell encounters a tall, colorful flightless bird, known as the mythical "Snipe", whom he names "Kevin". They then meet a Golden Retriever named Dug, who wears a special collar that allows him to speak and who vows to take the bird to his master . The next day, they encounter a pack of aggressive dogs led by Alpha, a Doberman Pinscher, and are taken to their master, who turns out to be Charles Muntz . Muntz invites Carl and Russell aboard his dirigible, where he explains to them that he is searching for a giant bird . When Russell notes the bird's similarity to Kevin, Muntz becomes hostile, believing they are attempting to capture the bird themselves . Carl flees with Kevin and Dug, but Muntz captures Kevin and starts a fire beneath Carl's house, forcing him to choose between saving it or Kevin . After Carl saves the house, he and Russell eventually reach the falls, though Russell is upset at Carl for abandoning Kevin . Carl looks through Ellie's childhood scrapbook and is surprised to find that she has filled in the blank pages with photos of their marriage, along with a note thanking him for the "adventure" and encouraging him to go have a new one . </P> <P> The repentant Carl goes outside, only to see Russell sailing off with some balloons and a propulsive leaf blower to try to rescue Kevin . By throwing out his furniture and keepsakes, Carl manages to lighten the house enough to follow . Russell is captured by Muntz, but Carl manages to board the dirigible, tether the house, and free Russell and Kevin . Dug inadvertently saddles Alpha with the cone of shame and becomes the dogs' new leader . Muntz pursues them around the airship, trapping Dug, Kevin and Russell inside Carl's house . Carl lures Kevin back onto the airship, with Dug and Russell clinging to her back . Muntz leaps after them, but snags his foot on some balloon lines and falls to his death . The house then descends out of sight through the clouds . </P>

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