Comfortably seated in a darkened movie theater, few of us are aware that each photogram on a film is surrounded by a black frame and that without the dark part there would be no picture. Following on this observation, KlaÌra TasovskaÌ helps us explore one of the oldest antinomies in the history of mankind: the difference between light and dark. Accompanying us are astronomers, projectionists, a group of children who created a general blackout, and the film director herself in a therapy of darkness through which we discover civilization's need for artificial light.