When Ludvig Ekman is ordered to do his military rehearsals course, he sends one of his employees, Lasse Alm, to do it for him. Everything is fine until Alm also is ordered to do the same thing - on the same boat! There is only one thing to do: Ekman goes as Alm. When Ekman goes aboard, he discovers that it is his wife's ex-husband who is captain and Ekman really is punished for marrying his wife.
Baron Conrad Crusenhielm is hit in the head during a drunken brawl. Suffering from amnesia, he is mistaken for the lost sailor Karlsson and taken to the navy vessel Fylgia.
Pelle and Maja are going on a holiday to Italy. The trip is canceled. Maja travels home to her mother. Pelle is persuaded by his friend Kurt to forget Italy and accompany him to Swedish west coast instead.
