Funfair worker Valdemar is unknowingly the illegitimate son of a rich landowner, colonel Von Brede. The colonel knows and employs Valdemar as his stable master. The colonel has a young and beautiful ward, Eva, but will she and Valdemar fall in love with each other?
A travelling theater-company performs Offenbach's "The Beautiful Helene" when an officer in the audience notices the similarity in appearance between the leading actor Leonard Pettersson and the king Charles XV. With Pettersson dressed as the king and the other actors as the royal suite, they all go to Herrsunda castle where the officer is trying to make an impression on his fiance.
Two inventors, Ville and Rulle have developed a revolutionary new accordion; however, they have competition. Twelve-year-old Pelle Borell gets to show off the instrument in front of the Swedish accordion elite in Stockholm.
