A team of historians and archaeologists embarks on a challenging mission to uncover the secrets of a forgotten weapon from the First World War. By excavating a site in northern France, they hope to find the remains of a Livens flame projector, a terrifying device that once struck fear into the hearts of soldiers on the front lines. As they dig through the mud and history, they piece together the story of the men who operated these machines and the devastating impact they had on the battlefield. This gripping journey into the past reveals the ingenuity and horror of war, shedding light on a dark chapter of history that has long been buried.