"Tom and Jamie can't believe their luck when they find a secret entrance to a prehistoric world filled with dinosaurs! The first dinosaur they meet is a friendly wannanosaurus. It eats the fruit from super-stinky ginkgo trees. But soon, Tom and Jamie meet a much less friendly dino: a Tyrannosaurus Rex that would like to eat them!"--P. [4] of cover.

Tom and Jamie come to the rescue after a quetzalcoatlus "dino-napps" their friend, the wannanosaurus.

As Tom and Jamie explore the prehistoric world they found through a secret cave, they hitch a ride on a herd of triceratops.

There's trouble in Dino World. A meteor has fallen, and all the dinaosaurs are spooked. And when the boys wander into the path of a stampeding Edmontosurus pack, they think they're done for!