There are millions of solutions to the problems of survival but there is only one substance that has awakened all organisms to life: salt. No creature can live without this magic mineral - and no living organism can produce it on its own. Amoebas, algae or humans - all life-forms are completely at the mercy of this simple chemical compound. In all bodies of water on earth, there is salt in abundance, and animals and humans have always been able to extract the valuable crystals from water - directly through their organs or with the aid of evaporation in salt lagoons. But on dry land, the white gold needed to be laboriously mined - sometimes at danger to life and limb. Enormous power and lavish wealth developed in the few privileged areas where salt production flourished. In its narrative structure the aim of the film is to link the historical aspects of salt production at various locations. The three principal aspects - nature - man - civilization - are intertwined to form the main thread of the film.