In a realm outside the real universe, a computer takes events and characters out of popular mythology and works of fiction and gives them life in a world where practically anything can happen. Puzzles and riddles abound, and during the course of the story, the Doctor and his companions will meet many mythical characters, including Rapunzel, Medusa, Gulliver (from Gulliver's Travels), D'artagnan, Sir Lancelot, Blackbeard, Cyrano De Bergerac, and even a cartoon character named the Karkus.
DVD Extras: Commentary - With actors Wendy Padbury, Frazer Hines, Hamish Wilson, and director David Maloney. The Fact of Fiction (dur. 34' 55") Actors and production team recall working on the story in this specially shot featurette. Highlander (dur. 22' 28") Actor Frazer Hines looks back on his career in Doctor Who and beyond. Easter Egg, Photo Gallery, Production Notes.