1740 Lakota territory somewhere in the current South Dakota. Indian tribes have not yet been "pacified" and live according to their customs, hunting buffalo, planting their teepees where resources abound. White men are rare and yet solitary, the Yankee army had not yet completed his destructive work. Whorlwind, the leader of the tribe of "Wolf Tails" collects a white of French origin, De la Verendrye was seriously injured by his sidekick Bruneaux, left with arms and horses. Back on his feet thanks to the ancestral knowledge of Stone, Human Medicine, De la Verendrye will accompany the good of the tribe in pursuit of his sidekick who, following a raid in the Indian village, grabbed two women and murdered the oldest. This fitted on the warpath will be an opportunity to measure the shock was the meeting of two cultures that had previously never had the opportunity to mingle. Everything revolves around the strange powers of "sacred iron," the stone gun that will make its appearance and excite lust less wise. Adventure story, psychological thriller, historical fiction, humanist essay, "Winter of the sacred fire" brews all genres, to the delight of the reader. Something with the Indians we missed, you think? Read Joseph Marshall III, you will be convinced ...