Up is a 2009 American computer-animated film directed by Pete Docter, who wrote the script with Bob Peterson. It stars the voices of Ed Asner, Christopher Plummer, Jordan Nagai, and Peterson. The film centers on elderly widower Carl Fredricksen (Asner) and Wilderness Explorer Russell (Nagai), who go on a journey to South America in order to fulfill a promise that Carl made to his late wife Ellie. Along the way, they meet a talking dog named Dug (Peterson), and encounter a giant bird named Kevin, who is being hunted by the explorer Charles Muntz (Plummer).