In 1920s New York, where the old and new eras intersect, a man as dazzling as the sun god Apollo enters high society. No one knows the past of Baron Carlyle de Rochelet; only rumors and scandals follow him like shadows. For Mabel Darlington, completing her university studies is far more important than the glamorous title of 'Debutante of the Year'—a promise kept to her cousin who died from shell shock. However, due to her uncle's debts, Mabel is forced into an unwanted political marriage with the Baron. He is much older, known for his complicated affairs, and shows no interest in her whatsoever. Thinking he wants to use her reputation to cover up his own scandalous rumors, Mabel attempts to drive him away by posing as a defiant flapper. But the enigmatic Baron sees right through her ruse. As Mabel steps into the world of a man who feels like a shadow without substance, will she get lost in the darkness, or will she find the light hidden beyond the shadow?