This is a definitive exploration of singer-songwriter Leonard Cohen as seen through the prism of his internationally renowned hymn, 'Hallelujah.' This new documentary weaves together the songwriter and his times and the song's dramatic journey from record label reject to chart-topping hit. Hallelujah features moving testimonies from major recording artists for whom Hallelujah has become a personal touchstone. The film accesses a wealth of never-before-seen archival materials from the Cohen Trust.