"Delicate matter slightly... it's about a book..."
 
When Chris Parsons borrows a book from an elderly university professor, he is surprisedto find it written in a strange alien language. He is even more suprised when the book is revealed not to be not of this Earth at all. Chris is about to enter a world of invisible spaceships, monsters made of molten rock and computers that can talk. He'll also meet a man with a very long scarf who claims he can travel through time and space... in a police box.