Challenged by the other jungle animals for its seemingly lazy ways, a sloth living in a tree explains the many advantages of his slow and peaceful existence.

Tiger Baby's mother has often told him stories about the white mountains and one morning he and some friends from the jungle set out to see them.

As animals tell one another about Hippo's strange behavior, each makes up something terrible to add to the story, until they are frightened that Hippo will destroy the Serengeti itself.

Having used their magic tree house to travel to India, where they must get a gift to help free the dog Teddy from a spell, Jack and Annie have adventures involving a tiger and other endangered jungle animals.