The Second World War rages in Belgium. Albert Foiret does his bit by helping Lisa Colbert, the head of a resistance group called Lifeline, conceal Allied airmen in his Brussels café. Aiding them are Natalie Chantrens, the Café Candide's beautiful waitress, and his girlfriend Monique Duchamps. Can the gang escape detection by arch-enemy Sturmbannführer Ludwig Kessler? The single-minded SS officer has vowed to destroy the organisation...