Join the Stonehart siblings on their next fantastical journey, one that immerses them in the fascinating story of how the vastness of Canada was unified by railway. In this episode they meet a young girl of Chinese heritage who's in need of help after a terrible accident leaves her injured and vulnerable to the wilderness. Together, the siblings pool their knowledge and talents to devise a rescue plan, but along the way they encounter risks that endanger their very lives. Will they be able to overcome the obstacles that separate them from safety?