In the aftermath of WWII, a woman is questioned by a police superintendent keenly interested in her case. Alsatian Aline Beaucaire worked in a hotel, fell in love with a sergeant-pilot too handsome to be honest, and followed him to the Free Zone, crossing the line of demarcation by night. The couple dreamt of going to Algiers via Marseille, the city of dangers. But soon, their adventure took a dramatic turn. Is Aline as innocent as she hopes to make the superintendent believe? What is the heavy secret she hides? Is she another Aline with a nearly identical name, the "Red Panther" who actively collaborated with the Gestapo? Who is she really, this "French bitch"?