They say whoever has the information controls the world. Imagine how dangerous someone who has all the information in the world must be. Professor Chronotis, a Time Lord and an old friend of the Doctor, has long lived in Cambridge. No one notices him among other equally ancient, eccentric teachers. No one sees that it is already several centuries old. Leaving his home planet, he took with him a couple of harmless little things as souvenirs. Among them was The Revered and Ancient Law of Gallifrey, a book that should never have been brought to Earth. And of course, it was impossible to lend it to the careless student Chris Parsons, who, with its help, hoped to impress a girl... It is difficult to find someone more alien on Earth than Skagra. It is this villain, obsessed with universal domination, who wants to get his hands on the book...