During the tumult of World War I, a band of American soldiers stumbles upon a peculiar relic capable of awakening the ancient malevolence known as the Krampus. Following the soldiers’ demise in combat, the artifact is dispatched to the widow of their commanding officer, who works as a teacher at a modest orphanage in a small town. The orphans inadvertently unleash the Krampus, compelling the teacher and her charges to confront this age-old menace.