Elena Luber

Mary arrives in Berlin from Canada to visit her nephew Max and meet his twin daughters that she has been amply supporting financially. But Max has cheated: There is only one daughter Inge who has to enact both girls to cover up the mess.

Two young people fall in love and run away from home. They soon run out of money and he, who has a decent voice, finds work in a low-class variety show, where he is captivated by the charms of a dancer.

After meeting up with a charming blonde and her female orchestra on a Danube river steamer, a nobleman who had aspired toward the classics turns to popular music instead.