The Sixth Doctor faces a cosmic threat that endangers not only Earth but the very fabric of time. A mysterious alien artifact surfaces, granting immense power to those who wield it, and the Doctor must race against time to prevent it from falling into the wrong hands, all while navigating the treacherous political landscape of an alien civilization.

As a television tie-in annual, the 1986 Doctor Who Annual likely served as a supplementary piece of content for fans of the show. The format, typical of British annuals from the era, suggests a collection of varied content aimed at younger audiences or dedicated followers. The inclusion of stories, features, and illustrations would have provided an engaging experience for readers during the period it was released. Its reception would have been tied to the popularity of the Doctor Who series at the time, offering a tangible connection to the television adventures.