In a clip of drouth, several herd of dinosaur seek an oasis know as the Great vale. Among these, a lessened “Longneck” herd give birth to a individual babe, name Littlefoot. old age subsequently, Littlefoot play with Cera, a “Three-horn”, until her male parent intervenes; whereupon Littlefoot’s female parent describe the different kind of dinosaur: “Three-horns”, “Spiketails”, “swimmer”, and “circular”. That nighttime, as Littlefoot follow a “Hopper”, he meet Cera once again, and they play together briefly until a big brownish “Sharptooth” attack.