A close film adaptation of Johann Strauss' "Fledermaus". Notary Falke uses Prince Orlofsky's ball, at which the distinguished gentlemen of Viennese society enjoy themselves with the opera's ballet girls, to take revenge on Dr. Eisenstein, who once embarrassed him after a drinking bout. Falke also invites Eisenstein's wife Rosalinde. During the lavish party, Eisenstein courts his own wife, who is disguised as a Hungarian countess. In the morning, he hurries to prison to serve a short sentence. His indignation is great when a Dr. Eisenstein is already sitting there. He had been taken from his wife's arms the night before. He makes a scene for Rosalinde, but she convicts him of infidelity with the Hungarian countess.