It all starts when she runs away from the altar in a church in Hamburg. Easygoing Henny Schönberg has qualms about marrying in the very last second and runs off to leave her stunned would-be husband Martin von Platt. Still dressed in her wedding gown, she takes the next best flight, not caring about its destination. This is how she lands in Vienna where she falls in love with Sigi Hirnschroth, not knowing he is married. She even meets his parents, Paula and Gustl, his wife, Renate, and little daughter, Julia, and everybody gets along just fine .... Until, however, the bomb hits!