The young siblings at the Hejrenæs estate, Vibeke and Hans-Henrik, have always gotten along well, so Hans-Henrik decides to celebrate his sister's 21st birthday with a big party at the estate. During the party, the siblings' childhood friend, Ulla, provokes an engagement with Hans-Henrik, and at the same party, Vibeke learns that she is "only" an adopted child. From that day on, Vibeke realizes that she is in love with Hans-Henrik, and suddenly the stage is set for a sharp conflict between Ulla and Vibeke.
John Wittig
as Godsejer Hans Henrik Thann
Astrid Villaume
as Vibeke Thann
Karin Nellemose
as Tante Sofia
Maria Garland
as Tante Hortense
Lisbeth Movin
as Ulla Biehle
Ib Schønberg
as Godsinspektør Sejersen
Johannes Meyer
as Herskabstjener Blackhøj
Knud Rex
as Skovfoged Ulf Henningsen
Bendt Rothe
as Fabrikant Helge Knudsen
Carl Heger
as Dyrlæge
Peter Poulsen
as Savværksbestyreren
Jakob Nielsen
as Skovarbejder Martin
