The cast is composed members of the pop bands Stuðmenn (also the name of the band in the film) and Grýlurnar (Gærurnar in the film), and the film is largely based on performances by the two bands.
The movie is a musical production that features actors who are also members of the pop groups Stuðmenn and Grýlurnar. The film's storyline is heavily influenced by these bands' music.