November 1920. Russia may have endured the Revolution, but a brutal war still rages. Distant relatives of the Romanovs, the Kirilov family is closer to danger than most. When tragedy strikes, four-year-old Lydia is separated from her family. Struck by the child's plight, the diplomat Sir Edward Stoneleigh brings her to England, where she grows up well-educated, wealthy and surrounded by a loving family. But Lydia yearns to know the truth about her heritage – then one day the charming Nikolay Andropov offers her the perfect opportunity to do so. Invited to join him on a trip to Russia, Lydia jumps at the chance to discover more about the past. But when reality sets in, is all as it seems?