After losing part of her memory, Maret, 44, sets out to find out who she used to be. She learns about the many different life paths she followed, in none of which anything was ever really achieved. A profoundly unhappy person in a never-ending, headlong rush. A doctor on the island of Lanzarote offers to put this restlessness to an end through brain surgery. A promise of peace and satisfaction. Will Maret proceed with the surgery that would take away part of her being - or not?

A film which explores a radical new idea - is there an imbalance between our brain hemispheres that is affecting how we live in our modern society?

In a Michał Socha-directed opening, the Simpson family takes a nightmarish trip through Homer's body, eventually settling on a couch formed from his brain.

The discovery of neuroplasticity, the fact that thoughts can change the structure and function of our brains, even into old age, is one of the most important breakthroughs in our understanding of the brain in recent times. In The Brain That Changes Itself, Dr Norman Doidge explores the profound implications of the changing brain in a way that will permanently alter the way we look at human possibility and human nature. The documentary examines a blind man who sinks a basketball; a woman with half a brain who leads a normal life; learning disorders, strokes and brain traumas that are improved and cured; and chronic pain that is alleviated. The vast expanse of the brain's possibility is still unrealized.