Watch VoirFilms. "Bergluft" is a no-budget suspense short film that confronts the audience with typical stylistic elements of the horror genre, without providing a clear resolution to the story. Four friends, Caro, Ben, Nicolas, and Steffi, go on a trip to the mountains together to celebrate the completion of their card game in a cabin. Along the way, an old mountain tale about a deceased puppeteer quickly sets the stage for a sudden shift in the tone of the movie..