The Lost Worlds of Planet Earth Ortelius hypothesized the idea that land masses may have been connected in the past, Alfred Wegener who hypothesized the idea of a super-continent Pangaea and continental drift despite the prevailing idea of flooded land-bridges at the time, and Bruce C. Heezen and Marie Tharp who discovered the Mid-Atlantic Ridge that supported the theory of plate tectonics. Tyson describes how the landmasses of the earth lay atop the mantle, which moves due to the motion and heat of the earth's outer and inner core. Tyson moves on to explain the asteroid impact that initiated the Cretaceous–Paleogene extinction event, leaving small mammals
The Legend That Was Earth interviews Cade and Marie and films footage of Hyadean and government cruelty. This interview gets broadcast to both Earth and the aliens’ planet Chryse. As a result, many Hyadeans pledge their support and Terrans are given courage to fight for their freedom. The struggle stops being an Earth vs. alien skirmish, and becomes a fight for the rights of both Terran and Hyadean. While Cade, Marie, and their posse travel from country to country to gain new allies and to find shelter, the Hyadean military steps ups its campaign and CounterAction comes under more attacks. They are attacked everywhere they