One day, Dr. Kroch receives a chest full of gold, accompanied by a semi-illegible letter pleading for help. The doctor pays no further attention to it, because the patient asks for a cure from… gold fever! When the coffin is later stolen by the highwaymen Oenk and Boenk, Dr. Kroch thinks there might be something more going on. He decides, together with his servant Valet, to look for the sender of the letter: the Duke of Woestewolf.