Return to the Land Before Time

this animated film begins when a boy finds a mystic portal, and he ends up in the great valley. there, he meets chomper, little-foot, ducky and the other dinosaur kids. as the kid learns from little-foot and his pals, they must find uncle Pterano and save his life, in return, Pterano saves chomper from the jaws of two large Allosaurus. throughout the adventure, the boy named Parker must learn how to survive until he's able to return home and visit again anytime.