The Land Before Time (1988)

"It is the dawn of time, the land of the dinosaur. Lost and alone, Littlefoot and his friends are about to embark on the journey of a lifetime."

An orphaned brontosaurus named Littlefoot sets off in search of the legendary Great Valley. A land of lush vegetation where the dinosaurs can thrive and live in peace. Along the way he meets four other young dinosaurs, each one a different species, and they encounter several obstacles as they learn to work together in order to survive.