On the day before the planned opening of their New York nightclub, Steven Ross and Jeff Howard are informed by musicians' manager Martin Drew, that his client, conductor Ladislaus Cassel, who lives next door, will prevent the club's opening because popular music is disturbing to Cassel and his granddaughter Victoria, an opera singer. Meanwhile, at the Cassel home, Cassel encourages Vicky to meet other men before she marries her fiancé, the stuffy Martin. Vicky decides to take his advice, and goes for a walk instead of taking the nap her grandmother Lucia, a former opera star, recommends. She accidentally meets Jeff and Steve, who have decided that one of them should romance Vicky and convince her to support the club. Vicky is charmed by Steve and introduces him and Jeff to her grandfather. On Steve's invitation, Vicky and Cassel attend the club's opening night, and Cassel reveals to Jeff's girl friend, singer Sue Jackson, that he has no objection to the club, but that Lucia and Martin, who are presently out of town, want it closed. Steve's attentions to the attractive Vicky disturb his current girl friend, Elaine Winters, even though she is busy cajoling Texas millionaire John Braden into supporting the club as a tax deduction. Later, after Vicky breaks her engagement to Martin, she discovers that he and Lucia have succeeded in closing the club. Believing that she will never see Steve again, Vicky is heartbroken, but Cassel, who dislikes Martin, tracks Steve down and reunites them. Now that the club is closed, Steve and Jeff have written a show that Elaine has persuaded Braden to back. Later, when Elaine sees Steve kissing Vicky, however, she announces that Braden has asked her to marry him and she will not let him back the show with "her" money. Cassel then offers to back the show, if they write a part for Vicky. Secretly, Cassel arranges for Lucia to sing in Mexico, accompanied by Martin. After she leaves, however, Cassel learns that Lucia has kept such a small sum of money in their joint account that he will not be able to pay the show's expenses. Elaine then returns, without having married Braden, and when she learns Cassel is broke, offers to back the show herself if Vicky drops out. Without telling Steve and Jeff, Vicky leaves the show, but on opening night, when Jeff, Steve and Sue learn the truth, they attempt to remove Elaine from the show through a ruse. Elaine discovers the trick, but then Braden comes backstage and tells Elaine he now has ten million dollars and still wants to marry her. He even offers to back the show if Steve and Jeff will release her from her contract. Vicky happily agrees to return to the show, but then Martin, acting as her manager, forbids her to appear. When Vicky defiantly refuses to quit, Lucia and Martin plot to close the show. After watching the first act, however, Lucia is charmed by the show, and informs Martin that Cassel, his most important client, will never appear under his management again if he prevents Vicky from performing. With Vicky as its star, the show goes on.