The Secret of Lost Valley (1980)
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.
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.