Published for the 200th anniversary of composer Richard Wagner's birth, Isolde 1939 is the story of French soprano Yvonne Chevallier, who becomes known before World War II for singing Wagner's operas and slowly finds herself embroiled in the great tragedy of her time - first singing her favorite role of Isolde at the Bayreuth Festival in 1939 with Adolf Hitler in attendance, and later singing Isolde again at the Paris Opera for the Nazis who have occupied France. Will Yvonne's passion for her art turn her into a full-fledged collaborator? How will her peers judge her after the war? And what consequences will her behavior have on the people she loves most? Loosely inspired by actual events.