A prince has a romance with a barmaid before he must give up personal happiness for duty.

A young prince falls in love with a beautiful barmaid while at university in old Heidelberg.

A young prince falls in love with a beautiful barmaid while at university in old Heidelberg.

Karl Heinrich is the heir to the throne of the small European principality of Rutania, but he's a lonely child, not allowed to play with other children and knowing little about life outside the castle. When he reaches maturity, he is sent to attend the University of Heidelberg, and finds fellowshi with classmates and a blossoming love with Katie Ruder, his only friend during childhood and the niece of an innkeeper. However, political turmoil in Rutania forces him to return. War is declared. Heinrich returns to Heidelberg one last time to bid a somber farewell to his beloved Katie.

Prince Karl Heinz enjoys his carefree life as a student in Heidelberg. He falls in love with the beautiful Käthe and everything is fine and dandy till his father is reported very ill.