40 Below and Falling tells the story of Kate Carter, a teacher from a small, Northern Canadian town, who is moving back to the big city for her wedding. After quitting her job and packing up her life, Kate feels certain that this is the future she has always wanted - that is until her flight gets cancelled by a blizzard and she meets a surly stranger named Redford. With all road travel being suspended, Kate is forced to hop on the back of Redford's snowmobile and embark on an adventure that will leave her questioning the decision she has made about the man she is set to marry.