From the director of "Where Rivers Run Wild: Aqua Hungarica" and "Land of Waters: Created by Man, Overtaken by Nature", this will be the last film in the trilogy. "Hidden World: The Story of Hungary's Wild Waters" is a Hungarian nature documentary that features rarely seen creatures and aquatic ecosystems that often live in close proximity to us humans, yet are almost completely unnoticed. It also shows the impact of the droughts and extremes that are so common in this decade. This is the story of the last wild waters.