When Lotje Sodderland was 34, her brain was permanently damaged by a stroke that almost killed her. It fundamentally changed her and how she saw the world but it also left her fascinated with the science that saved her life. In this documentary, Lotje meets neuroscience pioneers: scientists who are using the latest knowledge to repair 'broken' brains and developing ground-breaking treatments for everything from Parkinson's and Alzheimer's to autism. But as the brain is a complex organ and neuroscience is still in its infancy, Lotje examines the risks as well as the rewards associated with fixing something that we don't yet fully understand.