In this serial, the Doctor (Patrick Troughton) and his travelling companions Ben (Michael Craze) and Polly (Anneke Wills) arrive in the Scottish Highlands in 1746, just after the Battle of Culloden. They gain the trust of the Jacobites, but their friendliness gets them into serious trouble with the Redcoats led by Lieutenant Algernon Ffinch (Michael Elwyn). This serial is the first appearance of Frazer Hines as companion-to-be Jamie McCrimmon. Although audio recordings, still photographs, and clips of the story exist, no episodes of this serial are known to have survived.