Ten-year-old Christina lives a sheltered life until she discovers a secret tunnel, an evil plot to enslave orphans, and a mysterious source of energy known as zoom.
A young boy really wants a snake of his own, and after his mother reads a book about snakes and takes him to a museum and a pet store to see some, he finds his own pet "snakes" around the house.
After learning that she has the power to communicate with rodents, ten-year-old Emmy seeks a way to stop Miss Barmy, an evil nanny who has been turned into a rat, from stealing jewels from Emmy's wealthy parents.
To prove he is brave enough to portray his ancestor in a town parade, Abner Willow eats a bowl of fried grasshoppers and suddenly gains the magical ability to leap and jump.
Christopher would rather have a dog than a little brother who ruins his birthday parties, but when his brother begins to act like a puppy, Christopher has a change of heart.
When Derek Willow is invited to visit a friend in the old neighborhood, he and his siblings Abner, Tate, and Celia try to earn money for his train ticket using an enchanted, and very hungry, lawnmower.