From the publisher:

Mari shook her head and blinked, hoping her vision would clear, "Jason, there's a mermaid on our lawn. And we're not supposed to have any more pets!"

Thus begins the marvelous adventure of two children as Sister Rain leads them on a guided tour of the living world of Nature. She whisks them off to the world beneath the sea. Then on to more wonders and adventures with SunFather in his kingdom of the sky. They meet Copper the taxi-driving dragon, Earth Mother, and her talking mole, Scuttle. A raven named Poe and the kite-flying Brother Wind provide more wisdom and excitement. They meet the strange, unseen, and wonderful creatures of the Otherworld that surround us all the time. Earth, Air, Fire and Water are alive.