Prehysteria! 2

As the Great Day of the Flyers nears, the Great Valley's flying youngsters are eager to participate in the annual exhibition to show off their skills. Everyone, that is, except free-spirited pterodactyl Petrie, whose individualism causes problems when it comes to staying in formation. Enter his dinosaur pals Littlefoot, Cera, Spike and Ducky, who encourage Petrie to embrace his uniqueness.

Littlefoot learns a series of important lessons following an incident that nearly costs his grandmother her life. Soon afterwards, three dinosaurs arrive claiming they have lost their way.

Littlefoot befriends with a mysterious, fun-loving dolphin-like creature named Mo, who is trapped in "new water" caused by heavy rain. The gang then goes on an adventure to the "big water" to bring Mo home.

Littlefoot’s grandfather falls gravely ill, and the only hope for his recovery is the "Golden Night Flower" found in the treacherous Land of the Mists. Along with his loyal friends, Littlefoot embarks on a journey to retrieve the cure, joined by a shy newcomer named Ali, a long-necked dinosaur from a migrating herd. As they navigate the foggy, swamp-filled terrain, they are hunted by a pair of predators—a sharp-eyed bird and a massive crocodile—and must overcome their mistrust of the unfamiliar environment.