As Chapter 17 of The Hobbit begins, the Lonely Mountain is under siege. Thorin — hanging on to outdated imperialist dogma which perpetuates the economic and social differences in Middle-earth — refuses to negotiate, knowing Dain is on his way. When Bilbo’s plot is revealed, Thorin goes into a rage and orders him gone (“‘Order’, eh? ‘Oo does ‘e think ‘e is?”); but just as all looks hopeless, goblins attack, and we see the… well, you know. The Battle of Five Armies begins, and we look back at Tolkien’s famous essay “On Fairy-Stories” to explain the sudden turn of events.