Carnival of Love.

Tenor Peter Hansen is about to marry for the second time. Just minutes before his wedding to dancer and singer Kitty, he's still busy rehearsing for a new revue directed by Melchior Oberländer. Kitty's uncle Meierhofer, a prompter at the theater, is urging him to leave. However, Melchior is informed that his newly hired female star, Marina Garden, has arrived. She is to sing duets with Peter during an upcoming engagement in Cologne. Marina Garden turns out to be Peter's ex-wife, who has adopted a stage name.