RED

When the water supply to the Great Valley is blocked, Littlefoot and his friends must cooperate with a group of bullies to find the reason the cause.

When the dinosaur families get trapped in a valley by an ice storm, one family of "spike tail" dinosaurs volunteers to leave since they consume more food than the others. Meanwhile, the young dinos and a new adult dinosaur named Mr. Thicknose, head out to bring back their friend Spike, who has left his friends to be with members of his own species.

Littlefoot's grandfather narrates the story about the Lone Dinosaur that killed a Sharptooth. A giant monolith formed after the fight and if it's destroyed, bad luck will loom over the valley.

The Great Valley turns barren and herds of dinosaurs have to find another place to inhabit. Cera, Littlefoot and Petrie, all kids, leave to find food and get stranded on a lush unknown island.

After falling head over hooves in love with Giselle, Elliot's road to the altar takes a slight detour when Mr. Weenie is kidnapped by a group of pampered pets determined to return him to his owners.