Occupied Paris, 1942. Just before he dies, a man being chased by the Gestapo hands off a strange-looking document to the unsuspecting novelist Paul Ricard. It looks like a blueprint of a part for a military weapon, one that might have important information for the Allied forces. As Ricard finds himself drawn deeper and deeper into anti-Nazi efforts, and into increasingly dangerous espionage assignments, he travels to Germany and along the escape routes of underground resistance safe houses to spy on Nazi maneuvers. When he meets Leila, a professional spy, they begin to work together to get crucial information out of France and into the hands of the Allied forces in London.

1941. The City of Light is dark and silent at night. But in Paris, and in the farmhouses, barns and churches of the French countryside, small groups of ordinary men and women are determined to take down the occupying forces of Adolf Hitler. Mathieu, a leader of the French Resistance, leads one such cell, helping downed British airmen escape back to England. As the German military police heighten surveillance, Mathieu and his team face a new threat, dispatched by the Reich to destroy them all.

Cristián Ferrar, a brilliant and handsome Spanish émigré, is a lawyer in the Paris office of a prestigious international law firm. He is approached by the embassy of the Spanish Republic and asked to help a clandestine agency trying desperately to supply weapons to the Republic’s beleaguered army --- an effort that puts his life at risk in the battle against fascism. Joining Ferrar in this mission is a group of unlikely men and women: idealists, gangsters, arms traders, aristocrats and spies.

In the summer of 1938, Hollywood film star Fredric Stahl is on his way to Paris to make a movie for Paramount France. The Nazis know he’s coming; for their purposes, Fredric Stahl is a perfect agent of influence, and they attack him. What they don’t know is that Stahl, horrified by the Nazi war on Jews and intellectuals, has become part of an informal spy service being run out of the American embassy in Paris.