The story is set in the 1860's and is about several people from a fur company in Canada who set out on a journey to find a open a new store. They have to bulid it above the 70th parallel because that is where all the most animals are to be found in the area. They set out from their store in central Canada and head towards the west coast of Canada. Also with them comes a woman and her housekeeper whom she treats like a sister. This woman has traveled all over the world and now wants to discover the wetern part of Canada. Also along is an astronomer who came to study the solar eclipse that will be totally visible along the 70th parallel the following year.