Joe Gilchrist owned a stagecoach line that ran west from Calloway as far as Dunville. For the past few weeks he had been considering an extension of his line. He was about to apply for a franchise west of Dunville, when one of his men came into the office red-faced with excitement and the news that Molly Finn had set up a new franchise to run from Dunville right across the canyon - to take control of the Dunville line franchise. She needs a bridge to cross the canyon, and she aims to build one!