They may have been swallowed, but they have no intention of being eaten...
 
When a woeful mouse is swallowed up by a wolf, he quickly learns he is not alone: a duck has already set up digs, and, boy, has that duck got it figured out! Turns out it's pretty nice inside the belly of the beast - there's delicious food, elegant table settings and, best of all, dancing.

And there's something more: no more fear of being eaten by a wolf! Life's not so bad, considering the alternatives. That is, until a hunter shows up...