The summer of 1882 came at the end of the Indian War era in the western territories. It was a time when the last of the Native American people were being forced onto reservations, the Northern Pacific Railroad was under construction through Montana Territory, and the natural beauty of the west was being altered forever by the coming of civilization. It was a time in a beautiful western landscape where life ran its course with the seasons In Summer of Two Worlds the reader enters the life of an 11-year-old boy, son of a Sioux warrior. Prairie Cub was only born white. Having been orphaned on the prairie at age three and adopted by Thunder Eagle, a Sioux warrior, he was Sioux. It was the only life he knew. The name Michael was all he had of his ancestry. When the course of history doomed the Indian’s way of life, his father, realizing the boy’s white heritage gave him a chance for a future, sent his son back into the white man’s world. Summer of Two Worlds is the story of that summer. The story opens with a boy grieving for a life that had become just a memory, then becomes a flashback of that summer. He remembers life as it once was. The summer began with a new friendship with Lawrence Kaymond and his father, a French trapper in the mountains, as the Sioux village prepared to move from its winter grounds to the buffalo hunt, then on to the summer grounds outside a trading fort. For Prairie Cub and his family there was a detour to visit his new friends at their rendezvous gathering of mountain men on the Powder River, to celebrate the end of the trapping season and friendships. On one night during that visit, Prairie Cub had a dream - a vision, of his grandfather's death and the violent destruction of his people's village. At their camp outside the trading fort, the boy renewed his friendship with Scot Robinson and his father, a surveyor on the Northern Pacific Railroad, under construction just north of the fort. Upon arrival, he shared his vision with his grandfather who spoke of the events it foretold, his happiness that his life would end in the old ways and a violent future at which time the boy would have to make a decision about his future. But there was no knowing when this might happen. It could be weeks or months or years. The warmth of friendship and the love of family face the dangers arising from the arrival of a cavalry detachment, assigned to place the native people on the reservation. That friendship and love support Prairie Cub through the crisis that follows.