No one is as big and strong as the Bear! His claws are the sharpest, his teeth the spikiest; and his roaring makes the little animals shudder with fear. He is the king of his picture book—until, suddenly, his world is upside down! He finds himself tumbling through the pages, and finally lands in an unknown book... On his search for the way home he meets the inhabitants of other childrens' books that he has never seen before—but why is everyone so much taller than him all of a sudden? One thing is sure: On his own, it will be difficult to find the way back into his own book.