Young Om-kas-toe longs for the day when he can take his place as a brave. He doesn't have to wait long for adventure, however. While serving as lookouts he and his twin sister discover a strange animal that has never before been seen by the Blackfeet tribe.
Three hundred years ago the Blackfeet tribe wandered the northern plains in search of the buffalo they needed for meat and hides. The braves hunted on foot, which made stalking and killing the large animals very dangerous. The women and children followed, using backpacks and dogs to carry their belongings.
The animal is a horse; the tribe calls it an elkdog. Life in the tribe is never the same after the first elkdog is discovered and captured. For many years the story of the twins and the first elkdog is told around Blackfeet fires.