There are dinosaurs in Spooksville! Huge meat-eating lizards attack people in their cars. Flying reptiles swoop down and lift kids away. But where did these dinosaurs come from?

Adam and his friends discover a doorway that connects present-day Spooksville with sixty million years ago. It's through this portal that the dinosaurs are emerging and attacking the town.

Who created the passageway? And can it be closed before all of Spooksville is destroyed?