Billy Mo

Househusband Heinz lives with his two brothers Otto and Eduard. When Heinz wins a luxury cruise in a pop song contest, Otto and Eduard don't want to stay at home. The two decide to secretly go along as stowaways...

Birgit is a model from the city and sweetheart of the farmer's son Rolf. Incognito she takes a job as a maid on their farm.

Prospective hotel owner Carlos is having problems with the completion of his hotel on the Adriatic. He quickly asks his niece Vivi in Germany to cancel the bookings he has made so far. Unfortunately, his telegram reaches her too late and a motley group of guests arrives. They promptly pitch tents in the garden of the half-finished building.

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.