Tao helps free a wolf dog and enjoys drawing with colored shells. He draws animal images in a cave such as bears, bison and mammoth. When creating cave paintings, one must be careful to rub out unfinished images to avoid being caught and killed for disturbing the secret place. Tao uses limestone to create bright colors in his painting of the mountains. He finds his friend Ram and discovers that Graybeard has become sick. Tao is accused of defiling the secret cave, and is forced to fight another boy named Saxon to prove himself. In the end, Tao becomes the new cave painter, following in Graybeard's footsteps.