From www.wdwinfo.com

Plot of upcoming Tomorrowland film revealed
Jul 20, 2013

The plot of the mysterious Tomorrowland film has finally been revealed. Walt Disney Studios put out a release stating, "In the film, a high school girl with an unconventional understanding of technology is launched on a journey to reclaim her future." Britt Robertson, of the CBS show "Under the Dome," has been announced to be one of the film's leads; George Clooney has also been rumored to be starring. The plot release seems to be fairly on target with reports circulating a few months ago that said Clooney and several young ladies would have to save the earth from an alternate reality known as Tomorrowland.

Other stars include Hugh Laurie (House M.D.), Raffey Cassidy (Mr. Selfridge), and Thomas Robinson (The Protector).

The film will be released in theaters December 12, 2014 and is produced and written by Damon Lindelof (LOST, Star Trek) and Brad Bird (The Incredibles, Mission Impossible: Ghost Protocol).