In 1960, Jane Jacobs's book The Death and Life of Great American Cities sent shockwaves through the architecture and planning worlds, with its exploration of modern city planning. Jacobs, a journalist, author and activist, was involved in many fights in mid-century New York, to stop 'master builder' Robert Moses from running roughshod over the city and demolishing historic neighbourhoods in pursuit of his modernist vision. This film retraces those battles as contemporary urbanization moves to the very front of the global agenda, and examines the city of today through the life and work of one of its greatest champions.