A bus company wants to acquire traffic rights on an island in the Stockholm archipelago. The steam boats will be replaced by buses, but Captain Johansson and his daughter Eva are at the forefront of the protests.
Karl and Ada are engaged, Gustaf is a sailor and in love with Elsa. For her sake he's willing to stay ashore.
Inga and her father, the violin maker Lars, are big music enthusiasts. One day they meet the violinist Jan-Erik.
