In the region of Port-Victor on the west coast of Greenland, two months a year the sun melts the snow that has collected during the winter. The natural spectacle of streams rushing down the sides of the glaciers is extremely fascinating.
An expedition of alpinists, speleologists, divers and scientists tries to follow the course of the water. This is a completely unknown territory worn away by the water right to the heart of the ice. The documentary describes the activities of the members of the expedition and the splendid scenery of the natural environment.