College good guy Joe is drawn into a battle to save the world from arch-enemy Ferris. Joe's heirloom pendant just happens to be the key to the staff that opens doors to the Crossworlds. When Laura shows up to check on the key and Ferris' goons begin their assaults, they run to semi-retired adventurer A.T. for help and guidance.

After being driven to extinction, great bloodthirsty dinosaurs come back to life with the assistance of a demented genetic scientist. She plans to replace the human race with a super-race of dinosaurs who will not pollute the planet.