March 1939. Nazi Germany occupies the rest of Czechoslovakia and turns it into the Protectorate of Bohemia and Moravia. In exile, Czech soldiers train in Britain to fight for their homeland. Among them is Karel Čurda — brave, disciplined, and ready for sacrifice.
But after the assassination of Reinhard Heydrich in 1942, fear and despair drive him to the Gestapo. His confession unleashes a wave of terror: hundreds of resistance members are executed, and entire families perish.
Once a patriot, Čurda becomes the most infamous traitor in Czech history — a man whose single act of betrayal sealed the fate of heroes.