Grunt, a young cave boy, can draw animals that are so realistic they come to life, but when the tribe's hunters kill the animals for food, their greed almost depletes the supply altogether.
Left behind when the other cave dwellers move on, a small caveman rescues a mammoth and learns new skills that help him become the leader of his tribe.
Little Grunt brings home a very large egg for a special Sunday brunch; however, in the middle of the night, the egg opens up to reveal a baby dinosaur.
A boy, living in the ancient world before the invention of drawing, creates the world's first pictures as a means of sharing his visualization of everyday objects with those around him.