A French opera star in hiding hooks up with a swing band.

In the middle of her arranged wedding to financier Paul DeVry, Parisian opera star Nicole "Nikki" Martin suddenly rebels and takes off in search of love and adventure in the country. While hitchhiking, Nikki meets handsome American musician Windy McClean and, although he spites her, makes up her mind to follow him back to New York. Without revealing her identity, Nikki stows away on the ship on which Windy and his group, "McClean's Wildcats," are performers and is later discovered in their room by a steward. Nikki is locked up, and Windy, Whammo, Butch and Frank, "McClean's Wildcats," are fired. Still determined to be with Windy, Nikki escapes the ship in New York and locates the band's apartment a few steps ahead of the immigration officials. Once they turn away the authorities, the men demand that Nikki leave, but she stubbornly refuses until the men start undressing in front of her. At that moment, however, policemen are spotted outside, and afraid that they will be implicated, the quartet hauls the fleeing singer back to the apartment. The next morning, dancer Clair Williams, Windy's girl friend, shows up with a Mr. Hammacher, who offers them a low-paying job performing at his roadhouse. Anxious to depart, Windy and company accept the offer and, with Nikki in tow, leave the city. At the roadhouse, Nikki stuns the crowds with her singing, but a jealous Clair informs on her and sends the group running once again. To solve Nikki's problem, all of the men volunteer to marry her, then at Whammo's suggestion, they cut cards for her. Whammo cheats and wins but, seeing Windy's genuine love, bows out to his friend. At the impromptu marriage ceremony, however, Nikki finds out about the card cutting and runs back to the waiting arms of Paul DeVry. The group gags and ties Windy and, in the middle of Nikki's second lavish wedding, ambushes her and the minister, who then marries the new couple in the getaway limousine.