Carl Fredrickson has lived a full life and now doesn’t seem to have much to look forward to after the sudden death of his wife and childhood sweetheart Ellie. But he soon realizes he might have one more adventure in him, when contractors decide that they will take his house from him.
Rather than let unscrupulous developers bulldoze his house, he attaches hundreds of balloons to it and sails away. His plan is to get it to Paradise Falls in South America, where he and Ellie had wanted to go to since they were children. It’s smooth sailing until he realizes he has an accidental stowaway; the Wilderness Explorer named Russell.