In early 20th-century Vienna, Annika is raised by Ellie and Sigrid, a cook and housemaid for a household of three professors. Abandoned when she was a baby, Annika dreams of the day her mother will come back to claim her. Then one day, it happens. A glamorous woman arrives and sweeps Annika away to a crumbling castle in Germany. But there is much more to this new woman than meets the eye—and none of it is good.