Scarlett Johansson stars as Major, a law-enforcement agent whose human brain, after a terrible accident that nearly killed her, has been put into a body that's entirely synthetic -- she's essentially a robot with a human mind, and the first of her kind. She works for Section 9, a task force currently trying to take down a powerful hacker named Kuze (Pitt, Criminal) who has been using the technology that most humans have been modifying their own bodies and minds with, and controlling them to do his terrorist bidding. As Major gets closer to identifying the hacker, the more she learns of his targets of assassination, which happens to be Hanka Robotics, the very corporation that made her 'shell', or her artificial body.