Yusuke Watanabe ( Gantz , 20th Century Boy, Dragon Ball Z: Battle of Gods ) and Tomohiro Machiyama will handle the scripts, along with inputs from original author Hajime Isayama. Filming will start this Summer 2014, and casting for the film is currently ongoing.The story centers around the lives of Eren Yeager, his adoptive sister Mikasa Ackerman, and their friend Armin Arlert, who live in a world where the remnants of the human population live inside cities surrounded by enormous walls due to the sudden appearance of the Titans, gigantic humanoid creatures who devour humans seemingly without reason.via Anime News Network