The film "Die Unbesiegbaren" covers an episode in German history, in which the Bismarck government tried to mitigate the rise of the social-democrat movement.

Hans, living in Vienna during the Great Depression, intends to drown himself in the river after losing his livelihood. While there he meets a girl named Anna after pulling her from the river.

Both the King and his son have been deposed by popular demand. The now Prinz of Arkadia certainly enjoys his new role, which without much changing his lifestyle leaves him free to concentrate on his main interest -women. Including an actress who once wrote a mocking song about him -a song that he likes to sing.