When Jamie moves to Dinosaur Cove with his father hes looking forward to doing some fossil hunting on the beach. But when he & his friend Tom discover a forgotten cave with fossilised dinosaur footprints it takes them to another world.. .a world of dinosaurs. In this secret place the boys meet a small friendly Wannanosaurus who leads them further into the prehistoric landscape past mysterious fungi & strange fruits (which smell like sick!). But when the ground starts to shudder & the Wannanosaurus runs off at lightning speed the boys know theyre in serious danger. The Tyrannosaurus Rex has spotted them & hes coming their way.. . Can the boys outwit the T-Rex? Will they be able to find their way back to the cave? & can they make it to their own world before the tide comes in?