A touching dramatization of a short chapter of American history, tracing the life of the last Yahi Indian from his childhood to his death in 1917 and the story of his friendship with an anthropologist after his discovery in northern California in 1911.

While on a family outing, a boy, Adam, gets lost in the forest and discovers a wild boy there. Communicating by sign language, they become friends. When the wild boy is captured by scientists, Adam helps him escape.