Because his own mother is too young to take care of him, Umande, a newborn gorilla, is fed and cuddled by human zookeepers until a surrogate mother is found.

"A mother polar bear searches the arctic landscape for her cub"--

A stranded wolf cub is rescued and raised by a loving polar bear, and years later when he's grown into a wolf and on his own, he comes upon a lost polar bear cub, and the cycle begins again.