The film illustrates the diverse karst landscapes of Slovenia and Croatia, including the famous Zirknitz Lake, which annually empties, disappears, and is then refilled by rainfall. The director takes us through the Karst from Ljubljana to the Plitvice Lakes with their world-famous tuff deposits, concluding the journey at the Krka River near Šibenik, a river that repeatedly emerges, disappears into caves, and finally vanishes into the sea.