Don't go into the cave! A Shriekosaurus, the dinosaur that Rocky, Tiny, Mazu, and Bill are afraid of (even though no one has actually seen it) lives there. That's good advice, but with Gigantosaurus in pursuit, they have to take cover somewhere. Once inside the cave, the four friends might as well explore. There are scary shadows and a very loud roar. How will they find their way home? The adventurous dinos, and readers, are in for a real treat when the secrets of the cave are revealed.