A father and his son walk alone through burned America. Nothing moves in the ravaged landscape save the ash on the wind and water. It is cold enough to crack stones and, when the snow falls, it is gray. Their destination is the warmer south, although they don't know what, if anything, awaits them there.
After the lord of darkness decides he will not cede his throne to any of his three sons, the two most powerful of them escape to Earth to create a kingdom for themselves. This action closes the portal filtering sinful souls to Hell and causes Satan to wither away. He must send his most weak but beloved son, Little Nicky, to Earth to return his brothers to Hell.
A group of beavers ask Dr. Dolittle to save their habitat from loggers. The only hope is to get the forest preserved because it's the home of a protected bear, but there's a problem: the bear's the only bear in the forest, so she can't reproduce. Undaunted, Dolittle persuades a circus bear to help out, but he has to teach him not just the ways of the wild, but the wiles of lady bears too.
