Hushpuppy, an intrepid six-year-old girl, lives with her father, Wink in 'the Bathtub', a southern Delta community at the edge of the world. Wink’s tough love prepares her for the unraveling of the universe—for a time when he’s no longer there to protect her. When Wink contracts a mysterious illness, nature flies out of whack—temperatures rise, and the ice caps melt, unleashing an army of prehistoric creatures called aurochs. With the waters rising, the aurochs coming, and Wink’s health fading, Hushpuppy goes in search of her lost mother.

Experts say over the next hundred years the "perfect storm" of population growth, resource depletion and climate change could converge with catastrophic results. The scenarios in Earth 2100 are not a prediction of what will happen but rather a warning about what might happen.