It's basically a bunch of case studies regarding neuroplasticity. It's not really heavy on the science aspect, so anyone with even a basic understanding of neural functioning won't have any kind of problems enjoying it at all. Pretty interesting shit. There's one study of a chick born missing her entire left hemisphere, who now functions well enough that you wouldn't even know anything was wrong just by talking to her. This is particularly awesome because two of the more important areas of speech are located in the left hemisphere. I highly recommend.