 The series combines footage of explorer and travel writer Benedict Allen following in the footsteps of his subjects with interviews and archive footage to provide an insight into their lives.Allen has written that the series was made to answer a question he had first asked himself when he lost his dog team in the Bering Strait pack ice and his prospects looked grim.Where does the troublesome urge of the British to wander off alone, often without even bothering to give a half-decent excuse, come from?