A bunch of wagons are crossing the border. It's the Karla Circus, which, after a rough season in Germany, is gonna try its luck in Denmark. Mrs. Karla, the beloved and respected circus director, goes through passports and papers with the customs officers... everything's fine, so the circus caravan can keep going to the next town. One of the circus employees is caught harboring a vagrant in his wagon. But when it turns out that the vagrant is an excellent flute player, he becomes an asset to Circus Karla.
