A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground

　　1206年，挪威爆发内战。王国一半的势力想要杀死国王的私生儿子HåKon Håkonsson，有两位勇士保护着这位王子。影片讲述了一个改变了国家历史进程的故事。