Go behind the scenes of the highly-anticipated film Lucy, starring Scarlett Johansson and Morgan Freeman. The film explores an individual's brain capacity — the film posits that humans currently use 10 percent of their brains, while asking what might happen if 100 percent was accessed. The film tells the story of a young woman who, when put under extenuating circumstances against her will, is scientifically altered in a way that allows for her to access a much greater capacity of her brainpower. In this sneak peek, the two stars discuss exploring brain capacity, as well as the film's main character, Lucy. You can see Lucy in theaters nationwide beginning Friday.