Karl Heinz Busse

The enterprising but chronically indebted factory owner Gustav Mummelmann meets the supposedly wealthy Tyrolean innkeeper Mariele through a marriage advertisement. To fund the trip, he once again takes advantage of his nephew, the record producer Peter Weigand. Peter accompanies Gustav to Tyrol to escape his persistent girlfriend Marion-Madeleine, who is pressuring him to marry her.

London crime reporter Barney Blair has an appointment in his office with Janosch Kovac, the hotel detective at the Hotel Atlanta in San Remo. The informant wants to sell Blair some explosive background material, but it doesn't get that far because the man is stabbed to death beforehand. Blair goes to the hotel, where the film and music festival is currently taking place, to investigate the case himself and soon senses a big story.

Maria lives with her grandfather in a secluded fishing hut on Lake Constance where they barely survive on what the fishing grounds provide. The daughters from next door make things worse by scaring away the fish with their motorboat. But Hans, the son of a rich family, falls in love with Maria and tries to help her, although she is unsure if he can be trusted.

Music student Susanne and her cousin Monika inherit an alpine pasture. They have no idea that their hut is being used by a gang of smugglers as a temporary storage facility. While Susanne and her friends use the paradisiacal place to celebrate and play music, the crooks try all sorts of tricks to get hold of their hot goods.