16 year old Ally Hayden is about to go on a remarkable pre-historic adventure!

When Ally, the daughter of Paleontologist Dr. Donald Hayden accidently 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...

From her wanderings in the corridor of a natural history museum to her journey through history itself, Ally encounters a fascinating cast of characters, including dinosaur artist, Charles Knight and Barnum Brown, the renowned dinosaur bone hunter.

Her journey ends in a frightening yet wondrous face to face encounter with a 20-foot tall, 15-ton Tyrannosaurus Rex - rendered in incredible detail on the giant IMAX® screen!