In "The Last Farewell", Charles and Caroline decide to visit Walnut Grove. They learn that a railroad tycoon actually holds the deed to the township, and he wants to take it over for his own financial gain. Despite their best efforts, the townspeople are unable to drive the businessman away. At a town meeting, John Carter offers a supply of explosives that he has. Each man takes a turn blowing up his own building in an emotional farewell to the town.