La grande visione

What thread unites Magico Vento with the two legendary leaders of the Sioux nation who visit his spirit? Why do Red Cloud and Crazy Horse accompany the Strange Man of the Bull-Tail tribe to the undefined territories of the dream? They show him the path to follow and, by making him relive some moments of their lives, they reveal to him what task the Great Spirit placed in his hands, when he made the soldier Ned Ellis a Lakota and a medicine man.