In the movie, Casey, a brilliant and resourceful 12-year-old girl, finds a mysterious pin that allows her to travel to Tomorrowland, a futuristic world created by Walt Disney in the 1950s. There, she meets Frank Walker (Hugh Jackman), a former Imagineer who was exiled from Tomorrowland. Frank and Casey soon discover that Tomorrowland is in danger due to a powerful entity known as "The Destroyer," which threatens to destroy both Tomorrowland and the world.