Paris, 1943: Lana Antanova is rushing to tell her husband she is pregnant when she witnesses him being executed by a Gestapo officer for hiding a Jewish girl in a piano. Overcome with grief, Lana loses the baby.<br/><br/>A few months later, a heartbroken Lana is approached to join the Resistance on the French Riviera. As the daughter of a Russian countess, Lana has the perfect background to infiltrate the emigre community of Russian aristocrats who socialise with Nazi officers, including the man who killed her husband.<br/><br/>Lana's cover story makes her the mistress of a wealthy Swiss playboy, the darkly handsome and charismatic Guy Pascal, and her base his villa in Cap Ferrat. Together they make a ruthlessly effective team. Consumed by her mission, Lana doesn't count on becoming attached to a young Jewish girl or falling helplessly in love with Guy.<br/><br/>As the Nazis close in, Lana's desire to protect the ones she loves threatens to put them all at risk.