Europe, 1938. Even as the daughter of the extraordinary headlining illusionist, Lena Papadopoulos has never quite found her place within the World of Wonders - a travelling circus that traverses the continent in a luxury steam engine. Brilliant and curious, Lena yearns for the real-world magic of science and medicine, despite the limitations she feels in her wheelchair. But when a young French orphan, Alexandre, comes aboard the circus train, Lena's life is infused with magic and wonder for the first time. But outside the bright lights of the circus, darkness is descending on Europe. War is about to shatter Lena's world, and take away everything she holds dear. And to recover what she has lost, Lena will have to believe in the impossible.