Retreating French troops in the Napoleonic wars ravage a Baron's estate, and only his daughter, Sonia, who has hidden herself in the hayloft, survives. She joins a young man with a mysterious past, resolving to earn their living playing Whist with soldiers. Together with Sonia's former governess, they follow the troops towards Paris. Spies, battles, and ghosts of their pasts foil their plans along the way.



