Fun takes flight with prehistoric pals Littlefoot, Cera, Petrie, Spike and Ducky in this soaring adventure. "The Day of the Flyers," an important event for the flyers in the Great Valley, is approaching, and free-style Petrie is having trouble flying in formation with his siblings. His friends try to help him, but a "fuzzy" newcomer named Guido gives the most helpful advice -- that it's always best to just "be yourself." No one has ever seen anyone else like Guido, and when the gang tries to figure out what kind of dinosaur he is, their questions lead them on a thrilling journey to the Mysterious Beyond.