The world famous violinist Holger Brandt comes back to his family after a tour. He and his wife have been married for many years, but their love has faded. Their young daughter gets a new piano teacher, Anita Hoffman. Mr. Brandt falls in love with her and together they go on a world tour, but he soon discovers that the feelings for his wife that he thought were dead are not.
Helga Breder is a young, spoiled girl. To her beloved Jörgen she says that she, as a modern young woman, is multi-talented and can do whatever she likes. Jörgen bets that she can't work as a house-maid but, if she manages it, he will buy her a diamond ring. Helga becomes a house-maid at Vinger Mansion and falls in love with an inventor, Bertil Frigård, who lives there.
The American boat is on its way to Gothenburg. On board are the Swedish-American millionaire Fridolf F. Johnson from Detroit (Håkan Westergren) and his male secretary of the same name (Fridolf Rhudin). The millionaire stays hidden in his cabin with the secretary and does not appear on deck. A journalist arrives out at sea by airplane and asks for an interview, which the millionaire refuses to agree to. The journalist disguises himself as a steward, puts on a hidden camera (a spy camera) in the buttonhole, enters with a tea tray and photographs the wrong person - the secretary.
Danilo invites Hanna Glawari and the two dance a pair of rollers from the operetta's second act. The photographer has waved quite quickly, so the movements are remarkably slow. At one point, both outside picture ends.
