In the late Cretaceous period of Earth's history, iguanodon Aladar (voiced by D.B. Sweeney) is separated from his own species while still inside his egg. He is taken in and brought up by lemurs Zini and Plio, but when this adoptive family is all by wiped out by a meteor shower, Aladar and his friends are forced to join a mixed herd of dinosaurs who are migrating to a new nesting ground. This tribe is led by the hard-headed Kron (Samuel E. Wright), whose 'survival of the fittest' approach clashes with Aladar's more altruistic nature.

Final entry in the Indiana Jones trilogy. Indy (Harrison Ford) comes up against the Nazis once again after they kidnap his father, fellow archaeologist Dr Henry Jones (Sean Connery). Father and son are soon putting family tensions to one side in a search for the Holy Grail, which the Nazis also want in order to achieve eternal life.