Lucia, a young German married to Paolo, a Neapolitan emigrant, is raped. She tells a lie to her husband, but the day he discovers the truth a tragedy begins for the woman...

Head waiter Leopold has been secretly in love with the hostess Josepha for a long time, but she only has eyes for Dr. Siedler, a guest in the White Horse Inn. Leopold tries to get Dr. Siedler interested in the daughter of Industrialist Giesecke, who would rather see his daughter married to Sigismund.