Using a magic button, Casey Newton (Britt Robertson) enters a mysterious hidden land , taking her on an adventure to meet the isolated inventor Frank Walker (George Clooney) who entered it before. Together Casey and Frank travel to this land for the second time.
Bound by a shared destiny, a bright, optimistic teen bursting with scientific curiosity and a former boy-genius inventor jaded by disillusionment embark on a danger-filled mission to unearth the secrets of an enigmatic place somewhere in time and space that exists in their collective memory as "Tomorrowland."