A summer music camp; we follow the horn player, the conductor, and the conductor's son, Franz. Their stories are woven into a triangular drama, filled with music and rapid shifts between fun and seriousness. Franz is following the intrigues; some are nasty some are funny.
A friendship with the bullied horn player grows slowly. Franz finds the courage to surmount his fear with the help of a French horn that not only is seven metres long – it can conjure as well.