When an abandoned cat, about to have kittens, hears the lonely howl of a chained-up, abused hound dog, she seeks him out, and this unlikely pair become an unlikely family. Living underneath the porch of a old house deep in the American bayou, the kittens are safe as long as they stay in the Underneath. But it's a dangerous world out there and one kitten's moment of curiosity sets off an astonishing chain of events...