本片改编自布莱恩摩尔的畅销小说，布莱恩根据耶稣会所记载有关传教士在法兰西区的早期活动，撰写成拉佛格神父的传奇故事，并谨慎地将一段著名的历史戏剧化，从中能一窥早期北美的历史。 　　故事发生在1634年，一个年轻神父穿过北美荒野，来到加拿大向当地的印第安人传教。其间他的随从爱上了印第安酋长的女儿。恶劣的自然环境以及印第安人古老的生活方式使得他开始怀疑自己的使命是否正确。死亡的恐惧也在威胁着他们。In the 17th century a Jesuit priest and a young companion are escorted through the wilderness of Quebec by Algonquin Indians to find a distant mission in the dead of winter. The Jesuit experiences a spiritual journey while his young companion falls in love with the Algonquin chief's beautiful daughter underneath the imposing and magnificent mountains. Dread and death follows them upriver.