Late one night Wilbur hears a tapping at his window. There standing in the yard outside his window is a baby apatosaur. Knowing that the dinosaur cant stay Wilbur begins the long journey back through time to take him home. Bravely facing a fierce saber-toothed cat and narrowly escaping a monstrous Tyrannosaurus rex the two new friends trudge through the Ice Age and past the Cretaceous period finally arriving at the Jurassic period. Once his long-necked friend is safely home Wilbur makes the journey forward to his own time atop the largest most spectacular dinosaur hes ever seen.