Leigh Whannell’s Upgrade is a wonderful and devilish little concoction of a film. At its center is Grey Trace (Logan Marshall-Green), an old-fashioned “works with his hands” kind of guy who restores old cars in a near-future where all of the cars drive themselves. After an accident leaves him a quadriplegic, one of his more wealthy and influential clients offers to help him by implanting an experimental chip in his brain called STEM that will allow him to walk again.
It works. And then the chip starts talking to him.