It is 1914, and Eliza Ferriday is thrilled to be traveling to St. Petersburg with Sofya Streshnayva, a cousin of the Romanovs. The two met years ago one summer in Paris and became close confidantes. But when Austria declares war on Serbia and Russia's imperial dynasty begins to fall, Eliza escapes back to America, while Sofya and her family flee to their country estate. In need of domestic help, they hire the local fortuneteller's daughter, Varinka, unknowingly bringing intense danger into their household. On the other side of the Atlantic, Eliza is doing her part to help the White Russian families find safety as they escape the revolution. But when Sofya's letters suddenly stop coming, she fears the worst for her best friend.