Injured in the Battle of the Somme, Charley returns to wartime London and meets a deserter from the French Foreign Legion, Blue, who tells of his brutal experiences of the Battle of Verdun. All too soon Charley returns to the front line at Ypres where the threat from the German army is matched only by the inhumanity of his superiors! In the face of suffering and injustice, seeds of mutiny begin to grow among the ranks.