Ice Age

A long, long time ago, as long as 20,000 years ago, a small acorn-obsessed squirrel named Scrat wanted to hide an acorn in the ice. But what he does instead sets off a near-catastrophe that causes all the animals to migrate south, toward warmer lands. Well, not all of them, not quite. There's one who goes against the flow: the mammoth Manfred, a proud, wandering lone wolf who heads north simply because everyone else is heading south.