It is 1917, the period of the First World War when Italy is fighting Austria-Hungary. Lucilla di Torrebruna leaves high school and returns to her father, a colonel in the cavalry, who lives at San Donà di Piave.
Impresario Adler is imprisoned for insulting an official and therefore unable to negotiate an important concert tour with opera singer Lauri Volpi. In his place, he convinces Friedel, a pretty music student, to travel to Venice to meet the famous tenor. In her travels, Friedel sends postcards...
