Earth has been invaded by the powerful robots from the distant planet Cybertron - the Heroic autobots and their enemies, the Evil Decepticons. They can disguise their robot shapes as earthly machines and transform for battle at lightning speed. The battle between Good and Evil rages on Earth. You are the hero of this book - suddenly you are thrust into the deadly struggle. With the help of secret devices, found on an ancient flying saucer, you could travel back to prehistoric times and help the heroic Dinobots in their battle against the Evil Decepticons. If you dare.