After a visit to the dinosaur exhibit at the local luseum, the babies find themselves lost in the land before time.

The Rugrats visit the Planet Reptar amusement park where strange things are going on: Tommy's ball goes missing, Chuckie's crackers are gone, and Angelica's dol

To survive, they must evolve. The Walker crew has survived despite an alien invasion and the chaos it created. Even better, they’ve managed to keep the device