Sir David Attenborough investigates the amazing life story of the most famous elephant to have ever lived: Jumbo. A Victorian-era animal superstar, Jumbo is believed by many to be the biggest elephant in the world, a creature so large that his name became synonymous with being huge. Joined by a team of scientists from around the world, Attenborough gains unique access to Jumbo's skeleton at the American Museum of Natural History to separate fact from fiction.