Tells the compelling story of an iguanodon named Aladar, who is separated from his own kind and raised by a clan of lemurs, including the wisecracking Zini and the compassionate Plio. When a devastating meteor shower plunges their world into chaos, Aladar and his family follow a herd of dinosaurs heading for the safety of the "nesting grounds." Along the way, Aladar befriends Baylene, the dignified, elderly brachiosaur with a take-no-prisoners attitude; Eema, the unstoppable styrachosaur; and Neera, a feisty fellow iguanodon. Together, they must stand strong amid food and water shortages, the threat of attacks by carnotaurs, and Aladar's run-ins with the herd's stubborn leader, Kron. As the trip becomes one pulse-quickening adventure after another, it also forges friendships that no hardship can destroy.