It's 1944, a tired, one-eyed major, and his weary eight-man squad are lodged at Castle Keep in the Ardennes Forest. Seemingly oblivious to the war that surrounds them, the nobleman who owns the castle, concerned only about his desire for a son and heir to inherit his castle and its possessions, arranges for the major to become his wife's lover. However, the major insists on preparing the castle and the village for an attack. When the German offensive arrives, the squad is able to heroically defend the village and castle.