The noble knights of yesteryear - like the Three Musketeers - threw themselves carelessly into battle to save a lady's honor. The knights of our time are on motorcycles - and they are used for that. A young girl is to be married - but before the wedding she is pressured by an ex-boyfriend who wants to publish her letters to him. Four friends go on motorcycles to Stockholm to sort out the peas...
Detective Peter Smeth and his young and charming wife, Louise, visit Magasin Heiberg, where, at his wife's express request, he is to buy himself a new hat. He is not amused by the idea, but there is no getting out of it. Suddenly, however, an event occurs that causes the couple to change their minds. The daughter of the store's owner, Inge Heiberg, is found unconscious in the store's courtyard, and Peter and Louise rush to her aid. The fainting spell turns out to be shrouded in mystery.
Anno 1826. Grethi Birger is 17 years old and is now all alone in the world. Her mother is dead, and she has never known her father. Grethi are now looking for the mother's only sister, aunt Birger who has a laundry in a remote provincial town. Aunt is of strictly religious disposition, receiving sister daughter with cool goodness. When the young county clerk Peer discovers that Grethi is heir to a large fortune from his father, he plans to marry her without telling anything about the legacy.
