Charlie Parker and her husband Drake Langston accept a job with Gold Trail Adventures in Skagway, Alaska, flying visitors by helicopter to remote cabin sites to experience the outdoor lifestyle and seek their fortunes. It isn't long before one of the guests finds a set of bones in an old mine, remains that date back decades.
His hands full with present-day cases, police chief Sam Branson tells Charlie and her new reporter friend, Mina Gengler, that they are free to investigate. A second body is found, bringing up a lot of questions. Charlie gets a peek into the lives and times of Gold Rush-era Alaskans when she discovers a box of old letters written by one of the stampeders and begins to wonder if it's possible that the two bodies are connected? And why does it seem that someone in Skagway today doesn't want the women to dig for the truth?