In the 1930s, shy, Eight-year-old Carl Fredricksen idolizes famous explorer Charles F. Muntz. When Muntz is accused of fabricating the skeleton of a giant exotic bird he says he discovered at Paradise Falls, he vows not to return until he captures one alive. 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.