The famous singer Roberto Ricci wants to save himself from his overly intrusive female fans with a fake marriage. Mr. Praxl from the marriage institute Eros finds him his own granddaughter Gertie, who works as a waitress and wants to finance her own singing and dancing career with the fee for the role of his wife. To comply with Mr. Ricci's wishes, the attractive Gertie disguises herself as a wallflower with her hair pinned up and high-necked dresses. The act has the desired effect on Roberto's female followers. Over time, however, Gertie and Roberto actually fall in love with each other, which sparks the jealousy of Roberto's stage partner Loretta. With the help of Füllkrug, she tries to thwart the budding romance.

Ellinor Patton is so wealthy that her six unsuccessful marriages are considered befitting of her status. She is currently unhappily single again and hoping for her lucky number seven. Vico, the hotel owner's son, dreams of a career as a singer and is in love with the flower girl Blanche. His father is eagerly trying to prevent both. Vico proves that he really has talent at a concert by the Mantovani orchestra.

Carlo del Ponte, a pop star celebrated in the U.S., travels to his hometown of Santa Clara, Italy, to take some time off. Not only does Carlo find himself caught up in an armed robbery there, but his pretty cousin Antonella is missing her father and believes he has fallen victim to the old family feud between the del Pontes and the Tartinis. Now Carlo is supposed to help resolve the matter as peacefully as possible.