Gripsholm Castle.

Young lovers Kurt and Lydia spend their first vacation together in Sweden at the picturesque Gripsholm Castle. They enjoy their happy days outdoors and in the nature far away from all everyday troubles and have fun with Kurt′s old friend Karl who comes to visit them in their holiday home. But when Lydia′s beautiful friend Billie also joins them shortly after, Lydia senses that Kurt seems to be falling in love with Billie.