It's a cold, snowy night, and a big, cuddly bear sleeps soundly in his cave. A small hare wanders by, and snuggles up in the bear's cosy den. Before long, a fox comes along: "You may come in," says the hare, "but don't wake up the bear!" More and more animals snuggle into the bear's warm den, until a mouse curls up inside the bear's ear.