In 1939, Carl Fredricksen is a shy 8-year-old boy who meets an outgoing and rather eccentric girl named Ellie and discovers they share the same interest in adventures as their hero, famed explorer Charles Muntz. Ellie expresses her desire to move her clubhouse to Paradise Falls in South America, a promise she makes Carl swear to keep. Years pass, and Carl and Ellie marry and grow old together in the old house where they first met while making a living as a toy balloon vendor and a zookeeper respectively. Unable to have children, they also try to save up for the trip to Paradise Falls but other financial obligations arise. Just as they finally seem to be able to take their trip, Ellie dies of old age, leaving Carl living by himself, becoming sour and missing his wife terribly. As the years