At his uncle’s behest, the young Karl-Heinrich, Hereditary Prince of Saxe-Karlsburg, is sent to Heidelberg to study for a year. After a joyless youth in the gloomy, stately Karlsburg Castle, the prince embarks on the most carefree period of his life. He falls hopelessly in love with Käthi, the charming daughter of his landlords. But duty calls: the prince is gravely ill, and Karl-Heinrich must return to assume his duties as heir apparent and future ruler.
Christian Wolff
Erbprinz Karl-Heinrich
Gert Fröbe
Doktor Jüttner
Sabine Sinjen
Käthi
Ernst Stahl-Nachbaur
Fürst von Sachsen-Karlsburg
Heinrich Gretler
Gastwirt Rüder
Rudolf Vogel
Kammerdiener Lutz
Walter Bluhm
Diener Schölermann
Siegfried Schürenberg
Staatsminister Haugk
Tilo von Berlepsch
Kammerherr von Metzing
Harry Meyen
Graf Detlev von Asterberg
Wolfgang Eichberger
Kammerherr von Feldbach
Hannelore Elsner
Helene, Serviermädchen