Indian boys play in front of a tent camp on the prairie. They imitate the buffalo dance of the hunters. One boy doesn't like it. He wants to take part in the hunt, but is still too young. He sets off on his own and shoots a deer. An old chief meets him at the kill and tells him the story of the rainbow: a boy misused his magic bow and shot all the animals he could track down. The bear called him to account for this. The bear threw the boy's bow and arrows into the air. The result was the rainbow...