Peter wants to practice for an upcoming jazz competition with his friends Willi, Oskar, and Jupp. But his uncle Tobias, on whose farm Peter lives, must not find out about it.

Greta Lund leads her own jazz band with charm and flair, but she’s not interested in romantic entanglements with her musicians. Then the popular trumpeter and singer Peter joins her band and falls in love with her. He tries in creative ways to convince her that musicians are real men after all. After a chaotic concert, a brawl, and a series of mix-ups, the two finally find their way to each other.

Two rival Berlin revue theaters are vying for their big breakthrough. With top stars like jazz legend Louis Armstrong, the Kessler twins, and Bill Ramsey, they try to outdo and outmaneuver one another.

The dance troupe 'Tiller Girls' travels to Rome for a guest performance and has some adventures there.

Agathe Zausel doesn't have it easy. Not only could her doll factory be running better, but her sons-in-law Fred and Otto also seem to have nothing but fantasies on their minds instead of devoting their full attention to the family business. Fred has taken it into his head to secretly compose pop songs, while Otto is secretly designing a rocket plane. As they both try to keep their pastimes a secret from Agathe, she can only fear the worst.

During the summer holidays, a teenage girl in love with pop star Tedy Reno visits her aunt, an aging countess, at her mansion in Italy, where both music and men are strictly forbidden.