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.

The new waitress at the Gasthof zur Post is an object of desire for all men in the village.

Her father urges Greta to marry the noble lawyer Dr. Hans von Spoerling. But her former boyfriend Fred Roland is informed of the planned engagement and arrives from America just in time. Put under pressure from both parties, Greta leaves and hits the road. She ends up in Schlaffenhofen, a small village in Southern Bavaria. The attractive woman and her modern car - with Berlin's number plate 'IA' on it - is a small sensation. But the two fiancée haven't given up on her, especially since her father promised her to the first who finds her.