Paradiset is a boarding house in the archipelago of Stockholm, run by the strict Elvira Pettersson, and with a large variety of guests. Her maid Lotta quits her job but when she leaves she accidentally forgets to turn off the iron. However, her brother Julle sneaks back one night to turn it off. When he is discovered, he tries to make them believe that he is the great Argentine opera singer Don Carlos they have been waiting for
Major Grasser lives on his estate with his twin daughters Britta and Stina. Stina is studying at the university and Britta wants to work with farming. The major wants to put Britta in a school of commerce and hires a tutor to prepare her for higher education. This she dislikes and things doesn't gets better when her father thinking of selling the estate.
Theatre director Freddy Alsterberg has failed with his latest operetta. He decides to work his way over the Atlantic. His niece Tusse also stows away on the ship disguised as a boy.
