A nature documentary about the sustainability of contemporary riverbank habitats... In the past, we were surrounded by vast river worlds. All living creatures came together in the richest and ever-changing environment of lowland rivers. The freedom of river basins is now a thing of the past. We have also shackled the Danube landscape. We dammed the flow, cut off the side arms, fortified the banks, and drained the wetlands. Water can no longer bring new nutrients to the land. This also negatively affects the fate of golden bee-eaters, playful sandpipers, and wet-footed fishermen.