This final episode takes the viewer on a journey through the water world of Germany. In winter, the few ice-free surfaces are popular with waterfowl. Coots throng the source ponds of the River Havel, while above them white-tailed eagles gather for the hunt, as their prey swim openly beneath them. In Spring, the ice melts and the lakes and rivers awake from their winter torpor. Otters and beavers were once hunted mercilessly for their fur and eaten in periods of fasting. Today, both species are protected and their populations are recovering.