Feodora stands at a crossroads in her life, unemployed and lacking a purpose, when she is recruited by the British to infiltrate the Soviet Union as a spy. She is tasked with identifying a suspected double agent operating within the ranks of the Estonian Intelligence Services, a mission that holds personal significance for Feodora. As she dives deeper into the treacherous world of espionage, Feodora must navigate a labyrinth of deception and violence to uncover the truth and restore her nation's credibility within the British intelligence community.