August 1944. In the Nazi-occupied port city of Saint-Malo, Marie transmits her voice over the din of an air raid—an act for which the penalty is death. Werner, a young German soldier, listens intently.

The relentless questioning dredged up memories for Marie: the brutal arrival of the Germans in Paris. Simultaneously, Werner was pulled back to a single, pivotal moment – the day an SS officer came to his orphanage.

Having secured Etienne’s confidence, Werner finally divulged the shadows of his past, revealing his connection to the enigmatic shortwave frequency, 13.10. Meanwhile, Daniel exerted considerable effort to deceive the Gestapo.

Driven by an implacable purpose, von Rumpel makes his last desperate attempt to locate the Sea of Flames. Amidst the thunder of artillery and the advance of American troops into the city, Werner hastens to rescue Marie.