Harrison Ford and Abigail Breslin have signed on to star in the movie adaptation of Orson Scott Card's best-selling sci-fi novel Ender's Game.

Hugo star Asa Butterfield has been cast as lead character Ender Wiggin, a gifted and genius young boy who begins training at a military academy in a bid to take down an alien race, and now action star Ford has been tapped to play the school's student recruiter, Colonel Hyrum Graff.

Little Miss Sunshine's Breslin will play Ender's sister Valentine and True Grit beauty Hailee Steinfeld will portray the boy's friend, Petra Arkanian.

Ender's Game is set for a 2013 release, reports Variety.com.