16 year old Ally Hayden is about to go on a remarkable pre-historic adventure! When Ally, the daughter of Paleontologist Dr. Donald Hayden accidentally disturbs a very special fossil egg, she is magically transported back 65 million years to the Cretaceous Period! During her adventure, Ally witnesses giant flying reptiles like the Pteranodon with 20-foot wingspans soaring and swooping over a lush forest filled with strange plants and trees...She sees Hadrosaurs as big as elephants and hears the footsteps of other mammoth reptiles rumbling through the mist-shrouded valley...