Inga and her father, the violin maker Lars, are big music enthusiasts. One day they meet the violinist Jan-Erik.

Karl and Ada are engaged, Gustaf is a sailor and in love with Elsa. For her sake he's willing to stay ashore.

A group of private soldiers arrives at the Service of the Air Defense. Some sweet army girls are located nearby.

The spoiled Marianne has switched cocktail parties to flight lessons.

A man escapes from a psychiatric clinic, the tracks lead to the town Marstrand, where a woman is found murdered.

It's Walpurgis Night in Uppsala. The students sing the Student Song, put on their white caps, cheer and have drinks.