在月光下轻舞，华尔兹旋转似梦，悠扬乐声绵延。地下尖兵

　　Schani, Johan Strauss Jr., is forced by his father to forget music and to work in a bakery. Here he falls in love with Resi. The girl gets very jealous when a rich and beautiful contessa asks Schani to write a waltz for her. Schani writes and plays it, but he is always loyal to his girlfriend.