Three Scottish officers, including Sir Archi, murder Sir Arne and his household for a coffin filled with gold. The only survivor is Elsalill, who moves to relatives in Marstrand. There she meets a charming young officer- Sir Archi- and she soon understands that he was one of the murderers.
The mayor's son Mauritz Fristedt, has become deeply in love with the baker's daughter Dunungen. The mayor applauds the engagement because Mauritz will to try to foist a pack of worthless shares from his uncle to his father-in-law.