Things go terribly wrong for four youths, ejected from a London nightclub for rowdiness, after they decide to break into a Magic shop, where they tie up and terrorize the owner. They find to their cost that he deals in more than illusions...

Henry II and his estranged queen, Eleanor of Aquitaine, battle over the choice of an heir.

In the 26th century, the Doctor and Jo uncover a plot by the Master to provoke an interplanetary war between Earth and Draconia.