Set on the sun-drenched southern coast of Iran, "Harmonica" begins as a young boy receives a musical present from abroad. Fascinated and envious, his friends make him the leader of the pack, as they compete for the privilege of holding the harmonica or even blowing a few notes. No one is more obsessed than Amiroo, gentle and heavy-set, who seems willing to do anything to get close to the harmonica and its owner.