Following research into a new molecule, negligence on the part of a pharmaceutical laboratory leads to the spread of a devastating plague that transforms humans into the undead. A small group of survivors, forgotten in an evacuated and quarantined city, attempt to survive in this hostile environment. Among them are Martin and Frank, two cops; Eric and Fabrizio, two young thugs; Alice, whose husband Thomas is suspected of being infected; Jérémie and his daughter Jade; François, a fatalistic alcoholic; and Dr. Varda, a researcher specializing in the study of the molecule. Despite the tensions within the group, they will all try to join forces to escape this hell.

January 1945. The first French regiment of paratroopers to fight with an American unit to liberate Alsace in France. An Allied Division must take the forest bordering the town of Jebsheim, several days before the attack that would later be called the 'French Stalingrad.' Prisoners of the cold, snow, and harsh winter conditions, and pounded by German forces, the French and American soldiers learn the violence and hell of war In this struggle for freedom and survival, they will face and unexpected enemy.