 Karl and David wash up on the shore of a large uncharted island.Looking for help, Karl and David meet a man named Cyrus Crabb who leads them to Waterfall City, the capital of Dinotopia, a hidden civilization where human beings and dinosaurs peacefully coexist.In fact, some of the dinosaurs, notably a neurotic but friendly Stenonychosaurus named Zippo, possess human intelligence and speak perfect English.