When Arthur Champion, a gifted young music scholar, is sent away to war, he experiences the horrors of the Somme trenches. Surviving the slaughter, he begins to forge a new life for himself, discovering the profound, subversive power of his own musical voice. His extraordinary odyssey takes him from playing in the jazz clubs of Paris to performing for Woodrow Wilson in the White House, and back again, his only constant companions his humour, his abiding love for music, and the racism of the age.