A Romanian police officer, determined to free from prison a crooked businessman who knows where a mobster's money is hidden, must learn the difficult ancestral whistling language (Silbo Gomero) used on the island of Gomera.
42 Km Film, Les films du Worso, Komplizen Film, ARTE France Cinéma, Film i Väst, WDR, Filmgate Films, Studioul de Creatie Cinematografica al Ministerului Culturii