Five people, all hardened in the flames of World War one, all owing their lives to a Doctor Ernst Tisch who had retired with honor to Fairmount Valley in Colorado thought they could make safe and certain lives now that the world was at peace. But at first they came alarming letters from the Doctor of a darkness that was overcoming the valley. The missives spoke of dragons. None of the friends believed it was more than the strain of the war finally overcoming the old man. But now the doctor has disappeared. Debts must be paid so the five head for the valley to find out the truth of what has happened.