The film is set 66 million years ago in Late Cretaceous North America and covers the dramatic extinction event that wiped out the non-avian dinosaurs.

A single young Triceratops is the only one of her clutch to hatch. Her mother must lead her only child through the wonderous but dangerous Cretaceous...

In this endearing dinosaur tale, an introspective Tyrannosaurus Rex wonders why a so-called "terrible lizard" can't be a vegetarian!