While the rest of her family sleeps, a young girl takes her little
brother--whom she knows will be frightened by the windstorm raging
around their seaside house--on an imaginary voyage with his favorite
animal, the humpback whale. The bed lifts and the waters welcome them as
they embark on an undersea odyssey to swim and breach with the gentle
creature who rocks them gently to sleep in a rumbling, shimmering
hammock made of waves.