In the middle of Europe lies a mysterious wilderness that is irreplaceable for the migrating birds of Europe and beyond. This reserve is not only special because of its flourishing biodiversity, but also because it is manmade. This film tells the unique history of this wilderness made by human hands: its beginnings as a pre-modern sewage treatment plant, to the discovery of a natural paradise and the struggle of conservationists to preserve this water wilderness, whose importance reverberates across the continent.