An intense love affair develops between a married concert violinist (Gösta Ekman) and his daughter's music teacher (Ingrid Bergman).
The Swedenhielms is an old aristocratic family. The head of the family is professor Rolf Swedenhielm. His three children Bo, Julia and Rolf Jr also live in the house. They also have an excellent house maid, Boman. Because of the family's extravagance, they are heading for bankruptcy. But perhaps their problems would be solved if Rolf was awarded the Nobel Prize?
Ludvig and Sussi Battwyhl, Louis and Katja Brenner and Julia and Kurt Balzar are upper class millionaires. They don't seem to do any real work but still need a vacation in the mountains. Everybody seems to be romantically involved with everybody. A rich American woman joins them.
